Total Payments
$41,484
2024 Payments
$9,943
Companies
10
Transactions
31
Medicare Patients
547
Medicare Billing
$29,938
Payment Breakdown by Category
Consulting$30,937 (74.6%)
Research$6,000 (14.5%)
Other$2,220 (5.4%)
Travel$1,803 (4.3%)
Food & Beverage$523.78 (1.3%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Consulting Fee | $30,937 | 15 | 74.6% |
| Unspecified | $6,000 | 1 | 14.5% |
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $2,220 | 1 | 5.4% |
| Travel and Lodging | $1,803 | 4 | 4.3% |
| Food and Beverage | $523.78 | 10 | 1.3% |
Payments by Type
General
$35,484
30 transactions
Research
$6,000
1 transactions
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| Gilead Sciences, Inc. | $9,746 | 13 | $0 (2019) |
| GlaxoSmithKline, LLC. | $6,475 | 3 | $0 (2022) |
| Novo Nordisk AS | $6,000 | 1 | $0 (2020) |
| ModernaTX, Inc. | $5,025 | 1 | $0 (2024) |
| PFIZER INC. | $4,900 | 3 | $0 (2024) |
| F. Hoffmann-La Roche AG | $4,635 | 2 | $0 (2023) |
| E.R. Squibb & Sons, L.L.C. | $1,722 | 1 | $0 (2020) |
| Amgen Inc. | $1,650 | 2 | $0 (2020) |
| Grifols Shared Services North America, Inc. | $730.98 | 4 | $0 (2024) |
| Eli Lilly and Company | $600.00 | 1 | $0 (2020) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $9,943 | 5 | ModernaTX, Inc. ($5,025) |
| 2023 | $3,128 | 4 | F. Hoffmann-La Roche AG ($2,415) |
| 2022 | $4,850 | 2 | GlaxoSmithKline, LLC. ($4,850) |
| 2020 | $9,972 | 5 | Novo Nordisk AS ($6,000) |
| 2019 | $2,943 | 3 | GlaxoSmithKline, LLC. ($1,625) |
| 2018 | $10,648 | 12 | Gilead Sciences, Inc. ($8,428) |
All Payment Transactions
31 individual payment records from CMS Open Payments — Page 1 of 2
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 12/30/2024 | PFIZER INC. | — | Consulting Fee | Cash or cash equivalent | $3,150.00 | General |
| 07/18/2024 | ModernaTX, Inc. | — | Consulting Fee | Cash or cash equivalent | $5,025.00 | General |
| 06/07/2024 | Grifols Shared Services North America, Inc. | — | Food and Beverage | In-kind items and services | $18.10 | General |
| 02/26/2024 | PFIZER INC. | ABRYSVO (Biological) | Consulting Fee | Cash or cash equivalent | $1,050.00 | General |
| Category: VACCINES | ||||||
| 02/26/2024 | PFIZER INC. | ABRYSVO (Biological) | Consulting Fee | Cash or cash equivalent | $700.00 | General |
| Category: VACCINES | ||||||
| 11/11/2023 | Grifols Shared Services North America, Inc. | — | Food and Beverage | In-kind items and services | $46.80 | General |
| 10/18/2023 | Grifols Shared Services North America, Inc. | — | Consulting Fee | Cash or cash equivalent | $650.00 | General |
| 06/24/2023 | Grifols Shared Services North America, Inc. | — | Food and Beverage | In-kind items and services | $16.08 | General |
| 02/03/2023 | F. Hoffmann-La Roche AG | — | Consulting Fee | Cash or cash equivalent | $2,415.00 | General |
| 09/21/2022 | GlaxoSmithKline, LLC. | — | Consulting Fee | Cash or cash equivalent | $1,625.00 | General |
| 02/16/2022 | GlaxoSmithKline, LLC. | — | Consulting Fee | Cash or cash equivalent | $3,225.00 | General |
| 09/22/2020 | Novo Nordisk AS | — | — | Cash or cash equivalent | $6,000.00 | Research |
| Study: NN9931-4553 | ||||||
| 08/31/2020 | E.R. Squibb & Sons, L.L.C. | — | Consulting Fee | Cash or cash equivalent | $1,722.00 | General |
| 05/28/2020 | Eli Lilly and Company | — | Consulting Fee | Cash or cash equivalent | $600.00 | General |
| 01/06/2020 | Amgen Inc. | — | Consulting Fee | Cash or cash equivalent | $825.00 | General |
| 01/06/2020 | Amgen Inc. | — | Consulting Fee | Cash or cash equivalent | $825.00 | General |
| 09/03/2019 | GlaxoSmithKline, LLC. | — | Consulting Fee | Cash or cash equivalent | $1,625.00 | General |
| 04/25/2019 | Gilead Sciences, Inc. | — | Consulting Fee | Cash or cash equivalent | $1,250.00 | General |
| 04/11/2019 | Gilead Sciences, Inc. | — | Food and Beverage | In-kind items and services | $67.80 | General |
| 09/26/2018 | Gilead Sciences, Inc. | — | Consulting Fee | Cash or cash equivalent | $6,250.00 | General |
| 09/26/2018 | Gilead Sciences, Inc. | — | Travel and Lodging | In-kind items and services | $79.56 | General |
| 09/15/2018 | Gilead Sciences, Inc. | — | Food and Beverage | In-kind items and services | $50.00 | General |
| 09/15/2018 | Gilead Sciences, Inc. | — | Food and Beverage | In-kind items and services | $50.00 | General |
| 09/14/2018 | Gilead Sciences, Inc. | — | Food and Beverage | In-kind items and services | $125.00 | General |
| 09/14/2018 | Gilead Sciences, Inc. | — | Food and Beverage | In-kind items and services | $50.00 | General |
Research Studies & Clinical Trials
| Study Name | Company | Amount | Records |
|---|---|---|---|
| NN9931-4553 | Novo Nordisk AS | $6,000 | 1 |
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 3 | 135 | 149 | $20,286 | $7,657 |
| 2022 | 3 | 158 | 180 | $22,766 | $9,236 |
| 2021 | 3 | 147 | 164 | $21,751 | $8,054 |
| 2020 | 3 | 107 | 117 | $15,412 | $4,991 |
Total Patients
547
Total Services
610
Medicare Billing
$29,938
Procedure Codes
15
All Medicare Procedures & Services
15 procedure records from CMS Medicare Utilization
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Facility | 2023 | 47 | 59 | $8,108 | $4,461 | 55.0% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Facility | 2023 | 30 | 31 | $3,524 | $1,551 | 44.0% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2023 | 17 | 18 | $2,504 | $1,310 | 52.3% |
| 91200 | Measurement of liver stiffness | Facility | 2023 | 41 | 41 | $6,150 | $336.00 | 5.5% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Facility | 2022 | 71 | 90 | $11,051 | $6,424 | 58.1% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Facility | 2022 | 28 | 30 | $2,615 | $1,457 | 55.7% |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | Office | 2022 | 15 | 16 | $2,437 | $1,033 | 42.4% |
| 91200 | Measurement of liver stiffness | Facility | 2022 | 44 | 44 | $6,663 | $321.39 | 4.8% |
| 99214 | Established patient outpatient visit, total time 30-39 minutes | Facility | 2021 | 68 | 82 | $9,840 | $6,165 | 62.6% |
| 99214 | Established patient outpatient visit, total time 30-39 minutes | Office | 2021 | 11 | 12 | $1,800 | $814.75 | 45.3% |
| 99213 | Established patient outpatient visit, total time 20-29 minutes | Facility | 2021 | 12 | 14 | $1,153 | $617.32 | 53.5% |
| 91200 | Measuring the stiffness in the liver via elastography | Facility | 2021 | 56 | 56 | $8,958 | $457.13 | 5.1% |
| 99214 | Established patient office or other outpatient, visit typically 25 minutes | Facility | 2020 | 56 | 64 | $7,891 | $3,863 | 49.0% |
| 99213 | Established patient office or other outpatient visit, typically 15 minutes | Facility | 2020 | 14 | 16 | $1,305 | $712.85 | 54.6% |
| 91200 | Measuring the stiffness in the liver via elastography | Facility | 2020 | 37 | 37 | $6,216 | $415.17 | 6.7% |
About Dr. Anna Lok, MD
Dr. Anna Lok, MD is a Internal Medicine healthcare provider based in Ann Arbor, Michigan. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 10/23/2006. The National Provider Identifier (NPI) number assigned to this provider is 1013090935.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Dr. Anna Lok, MD has received a total of $41,484 in payments from pharmaceutical and medical device companies, with $9,943 received in 2024. These payments were reported across 31 transactions from 10 companies. The most common payment nature is "Consulting Fee" ($30,937).
As a Medicare-enrolled provider, Lok has provided services to 547 Medicare beneficiaries, totaling 610 services with total Medicare billing of $29,938. Data is available for 4 years (2020–2023), covering 15 distinct procedure/service records.
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Practice Information
- Specialty Internal Medicine
- Other Specialties Hepatology, Gastroenterology
- Location Ann Arbor, MI
- Active Since 10/23/2006
- Last Updated 11/05/2019
- Taxonomy Code 207R00000X
- Entity Type Individual
- NPI Number 1013090935
Products in Payments
- Non-Covered Product (Drug) $2,220
- ABRYSVO (Biological) $1,750
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Data Sources
Provider data from NPPES. Payment data from CMS Open Payments. Medicare data from CMS Medicare Provider Utilization. All data is public and updated periodically.
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