Mariah Robertson, M.D.
NPI 1639556590 · Internal Medicine Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariah Robertson, M.D. is a Internal Medicine Physician provider in Baltimore, MD (NPI 1639556590).
Provider details
- NPI number
- 1639556590
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- D85250 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
180 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 81 | $190 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 76 | $130 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 23 | $135 |
Typical Medicare-allowed amounts for these services range $130–$190 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 31 | 12 |
| Apixabanbrand: Eliquis | 25 | — |
| Furosemide | 17 | — |
| Losartan Potassium | 15 | — |
| Famotidine | 14 | — |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 13 | — |
| Trazodone Hcl | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-04-29
- Last updated
- 2022-10-05
- Certified
- 2022-10-05
Frequently asked questions
- What is Mariah Robertson's NPI number?
- Mariah Robertson's National Provider Identifier (NPI) is 1639556590, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariah Robertson's specialty?
- Mariah Robertson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mariah Robertson located?
- Mariah Robertson's practice location on file with NPPES is 4940 Eastern Ave, Baltimore, MD 21224-2735.
- What is Mariah Robertson's phone number?
- The practice phone number listed in the NPPES registry for Mariah Robertson is (410) 550-0535.
- Does Mariah Robertson accept Medicare?
- Mariah Robertson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariah Robertson's NPI active?
- Yes — Mariah Robertson's NPI (1639556590) is active in the NPPES registry as of the last update on 2022-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.