Shaffer Randall Shrope Mok, M.D.
NPI 1275878787ActiveIndividual· Internal Medicine, Gastroenterology· Columbia, MD
Internal Medicine, Gastroenterology (M.D.) with Gastro Center of Maryland LLC, practicing in Columbia, Maryland. In 2024 Medicare paid $64,873 for 245 patients, and Part D covered 260 of their prescriptions, 89% of them generic. US Endoscopy was the largest of 2 companies reporting payments in 2025, $9,480 in all, mostly consulting fees.
Overview
| NPI | 1275878787 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 10, 2012 |
| Last updated in NPPES | May 10, 2026 |
| Certified by provider | May 10, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | ME153258 | FL |
| Internal Medicine, Gastroenterology | 207RG0100X | D0102518 | MD |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
| Internal Medicine | 207R00000X | D0102518 | MD |
| Internal Medicine, Gastroenterology | 207RG0100X | MD452678 | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (DC); Practitioner - Gastroenterology (FL); Practitioner - Gastroenterology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 245 |
|---|---|
| Services billed | 545 across 60 procedure codes |
| Paid by Medicare | $64,873 |
Part D prescriptions in 2024
| Prescriptions (claims) | 260 · 384 30-day fills |
|---|---|
| Patients | 110 |
| Total drug cost | $25,078 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Gastro Center of Maryland LLCOlney, MD · 23 clinicians
Industry payments (Open Payments)
- 2025$9,480 · 10 payments from 2 companies
- 2024$9,421 · 7 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| US Endoscopy | $8,000 | 4 |
| Steris Corporation | $1,480 | 6 |
What the 2025 payments were for
- Consulting Fee$8,000 · 4 payments
- Travel and Lodging$1,385 · 4 payments
- Food and Beverage$95.52 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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