Ryan Dadasovich, M.D.
NPI 1639390750 · Internal Medicine Physician · Stamford, CT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Dadasovich, M.D. is a Internal Medicine Physician provider in Stamford, CT (NPI 1639390750).
Provider details
- NPI number
- 1639390750
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 048922 (CT)
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
268 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 233 | $184 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 35 | $139 |
Typical Medicare-allowed amounts for these services range $139–$184 (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) |
|---|---|
| Atorvastatin Calcium | 36 |
| Mirabegronbrand: Myrbetriq | 34 |
| Donepezil Hcl | 27 |
| Sitagliptin Phosphatebrand: Januvia | 24 |
| Mirtazapine | 20 |
| Baclofen | 19 |
| Amlodipine Besylate | 16 |
| Gabapentin | 15 |
| Levetiracetam | 12 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-02
- Last updated
- 2021-12-16
- Certified
- 2021-12-16
Frequently asked questions
- What is Ryan Dadasovich's NPI number?
- Ryan Dadasovich's National Provider Identifier (NPI) is 1639390750, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Dadasovich's specialty?
- Ryan Dadasovich is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Dadasovich located?
- Ryan Dadasovich's practice location on file with NPPES is 2015 W Main St, Stamford, CT 06902-4536.
- What is Ryan Dadasovich's phone number?
- The practice phone number listed in the NPPES registry for Ryan Dadasovich is (203) 863-3671.
- Does Ryan Dadasovich accept Medicare?
- Ryan Dadasovich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Dadasovich's NPI active?
- Yes — Ryan Dadasovich's NPI (1639390750) is active in the NPPES registry as of the last update on 2021-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.