Mark Kelemen, M.D.
NPI 1902850548 · Cardiovascular Disease Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Kelemen, M.D. is a Cardiovascular Disease Physician provider in Baltimore, MD (NPI 1902850548).
Provider details
- NPI number
- 1902850548
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D45643 (MD)
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 tenure28% of score
20 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
3,979 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 1,962 | $8 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 389 | $68 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 335 | $121 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 208 | $133 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 155 | $99 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 199 | 65 |
| Apixabanbrand: Eliquis | 151 | 39 |
| Atorvastatin Calcium | 107 | 42 |
| Rosuvastatin Calcium | 75 | 30 |
| Furosemide | 72 | 25 |
| Losartan Potassium | 55 | 19 |
| Spironolactone |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-19
- Last updated
- 2010-11-03
Frequently asked questions
- What is Mark Kelemen's NPI number?
- Mark Kelemen's National Provider Identifier (NPI) is 1902850548, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Kelemen's specialty?
- Mark Kelemen is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Kelemen located?
- Mark Kelemen's practice location on file with NPPES is 22 S Greene St, Baltimore, MD 21201-1544.
- What is Mark Kelemen's phone number?
- The practice phone number listed in the NPPES registry for Mark Kelemen is (410) 790-7690.
- Does Mark Kelemen accept Medicare?
- Mark Kelemen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Kelemen's NPI active?
- Yes — Mark Kelemen's NPI (1902850548) is active in the NPPES registry as of the last update on 2010-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.