Dana Ryan, DR.
NPI 1780609990 · Internal Medicine Physician · Alpine, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dana Ryan, DR. is a Internal Medicine Physician provider in Alpine, CA (NPI 1780609990).
Provider details
- NPI number
- 1780609990
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DR.
- Sex
- Female
- Sole proprietor
- No
- License
- A66830 (CA)
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
49 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) |
|---|---|---|
| Hemoglobin A1c Level83036 | 49 | $10 |
Typical Medicare-allowed amounts for these services range $10–$10 (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 · 76 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 437 | 138 |
| Semaglutidebrand: Ozempic | 213 | 30 |
| Metformin Hcl | 190 | 61 |
| Losartan Potassium | 187 | 56 |
| Lisinopril | 177 | 53 |
| Amlodipine Besylate | 164 | 52 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2025-08-15
Frequently asked questions
- What is Dana Ryan's NPI number?
- Dana Ryan's National Provider Identifier (NPI) is 1780609990, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dana Ryan's specialty?
- Dana Ryan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Dana Ryan located?
- Dana Ryan's practice location on file with NPPES is San Ysidro Health, Alpine, CA 91901.
- What is Dana Ryan's phone number?
- The practice phone number listed in the NPPES registry for Dana Ryan is (619) 662-4100.
- Does Dana Ryan accept Medicare?
- Dana Ryan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dana Ryan's NPI active?
- Yes — Dana Ryan's NPI (1780609990) is active in the NPPES registry as of the last update on 2025-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.