Donald Hammer, MD
NPI 1538255096 · Cardiovascular Disease Physician · Cleveland, OH
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donald Hammer, MD is a Cardiovascular Disease Physician provider in Cleveland, OH (NPI 1538255096).
Provider details
- NPI number
- 1538255096
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35043941H (OH)
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
19 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
447 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 153 | $92 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 95 | $62 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 74 | $74 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 48 | $125 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 28 | $84 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 227 | 76 |
| Atorvastatin Calcium | 170 | 61 |
| Rosuvastatin Calcium | 163 | 59 |
| Apixabanbrand: Eliquis | 157 | 45 |
| Sacubitril/Valsartanbrand: Entresto | 96 | 29 |
| Ezetimibe | 79 | 31 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-04
- Last updated
- 2008-02-06
Frequently asked questions
- What is Donald Hammer's NPI number?
- Donald Hammer's National Provider Identifier (NPI) is 1538255096, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Hammer's specialty?
- Donald Hammer is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Hammer located?
- Donald Hammer's practice location on file with NPPES is 9500 Euclid Ave, Cleveland, OH 44195-0001.
- What is Donald Hammer's phone number?
- The practice phone number listed in the NPPES registry for Donald Hammer is (800) 223-2273.
- Does Donald Hammer accept Medicare?
- Donald Hammer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donald Hammer's NPI active?
- Yes — Donald Hammer's NPI (1538255096) is active in the NPPES registry as of the last update on 2008-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.