John Hallett, MD
NPI 1619436995 · Family Medicine Physician · Rohnert Park, CA
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hallett, MD is a Family Medicine Physician provider in Rohnert Park, CA (NPI 1619436995).
Provider details
- NPI number
- 1619436995
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
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 tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 156 | 56 |
| Tamsulosin Hcl | 62 | 19 |
| Lisinopril | 61 | 25 |
| Fluticasone Propionate | 56 | 23 |
| Amlodipine Besylate | 55 | 24 |
| Gabapentin | 48 | 19 |
| Metformin Hcl | 44 |
Practice location
Mailing address
Additional practice locations (2)
- 1179 N Mcdowell BlvdPetaluma, CA 94954-6559Phone: (707) 559-7500Fax: (707) 559-7707
- 4860 Y St Ste 2500Sacramento, CA 95817-2307Phone: (916) 734-6978Fax: (916) 734-6666
Registry dates
- Enumerated
- 2019-03-17
- Last updated
- 2022-10-20
- Certified
- 2022-10-20
Frequently asked questions
- What is John Hallett's NPI number?
- John Hallett's National Provider Identifier (NPI) is 1619436995, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hallett's specialty?
- John Hallett is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Hallett located?
- John Hallett's practice location on file with NPPES is 5900 State Farm Dr Ste 200, Rohnert Park, CA 94928-2149.
- What is John Hallett's phone number?
- The practice phone number listed in the NPPES registry for John Hallett is (707) 559-7500.
- Does John Hallett accept Medicare?
- John Hallett is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hallett's NPI active?
- Yes — John Hallett's NPI (1619436995) is active in the NPPES registry as of the last update on 2022-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.