Umar Ahmad, D.O.
NPI 1336589746 · Endocrinology, Diabetes & Metabolism Physician · Danbury, CT
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Umar Ahmad, D.O. is a Endocrinology, Diabetes & Metabolism Physician provider in Danbury, CT (NPI 1336589746).
Provider details
- NPI number
- 1336589746
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 266450 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,005 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 320 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 275 | $98 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 142 | $37 |
| 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 | 57 | $18 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 53 | $178 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 540 | 159 |
| Semaglutidebrand: Ozempic | 313 | 75 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 254 | 104 |
| Empagliflozinbrand: Jardiance | 249 | 69 |
| Tirzepatidebrand: Mounjaro | 246 | 62 |
| Metformin Hcl | 241 | 82 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$72 across 3 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
Additional practice locations (1)
- 41 Mall RdBurlington, MA 01805-0001Phone: (781) 744-2088Fax: (781) 744-5348
Registry dates
- Enumerated
- 2013-06-29
- Last updated
- 2018-03-27
Frequently asked questions
- What is Umar Ahmad's NPI number?
- Umar Ahmad's National Provider Identifier (NPI) is 1336589746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Umar Ahmad's specialty?
- Umar Ahmad is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Umar Ahmad located?
- Umar Ahmad's practice location on file with NPPES is 25 Germantown Rd, Danbury, CT 06810-5036.
- What is Umar Ahmad's phone number?
- The practice phone number listed in the NPPES registry for Umar Ahmad is (203) 794-5620.
- Does Umar Ahmad accept Medicare?
- Umar Ahmad is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Umar Ahmad's NPI active?
- Yes — Umar Ahmad's NPI (1336589746) is active in the NPPES registry as of the last update on 2018-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.