Michelle Ma, MD
NPI 1457796153 · Gastroenterology Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michelle Ma, MD is a Gastroenterology Physician provider in Baltimore, MD (NPI 1457796153).
Provider details
- NPI number
- 1457796153
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MT203542 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
492 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 177 | $121 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 106 | $146 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 84 | $17 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 42 | $176 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 29 | $175 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ursodiol | 63 | 21 |
| Tacrolimus | 63 | 11 |
| Rifaximinbrand: Xifaxan | 46 | — |
| Mycophenolate Mofetil | 44 | — |
| Carvedilol | 44 | 14 |
| Entecavir | 42 | — |
| Tacrolimusbrand: Envarsus Xr | 28 | — |
| Azathioprine | 25 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$641 across 20 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-05-08
- Last updated
- 2019-10-20
Frequently asked questions
- What is Michelle Ma's NPI number?
- Michelle Ma's National Provider Identifier (NPI) is 1457796153, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michelle Ma's specialty?
- Michelle Ma is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Michelle Ma located?
- Michelle Ma's practice location on file with NPPES is 600 N Wolfe Street, Baltimore, MD 21287-0005.
- What is Michelle Ma's phone number?
- The practice phone number listed in the NPPES registry for Michelle Ma is (410) 955-2636.
- Does Michelle Ma accept Medicare?
- Michelle Ma is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michelle Ma's NPI active?
- Yes — Michelle Ma's NPI (1457796153) is active in the NPPES registry as of the last update on 2019-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.