Elizabeth Ryan, NP
NPI 1669539805 · Adult Health Nurse Practitioner · Petaluma, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elizabeth Ryan, NP is a Adult Health Nurse Practitioner provider in Petaluma, CA (NPI 1669539805).
Provider details
- NPI number
- 1669539805
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 495390 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 73 | 73 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 51 | 49 |
| Colestipol Hcl | 27 | 16 |
| Prucalopride Succinatebrand: Motegrity | 12 | — |
| Pantoprazole Sodium | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-03
- Last updated
- 2022-02-11
Frequently asked questions
- What is Elizabeth Ryan's NPI number?
- Elizabeth Ryan's National Provider Identifier (NPI) is 1669539805, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth Ryan's specialty?
- Elizabeth Ryan is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Elizabeth Ryan located?
- Elizabeth Ryan's practice location on file with NPPES is 3900 Lakeville Hwy, Petaluma, CA 94954-5698.
- What is Elizabeth Ryan's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth Ryan is (707) 765-3960.
- Does Elizabeth Ryan accept Medicare?
- Elizabeth Ryan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elizabeth Ryan's NPI active?
- Yes — Elizabeth Ryan's NPI (1669539805) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.