Mollie Massy, DO
NPI 1770017501 · Family Medicine Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Osteopathic Manipulative Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mollie Massy, DO is a Family Medicine Physician provider in Sacramento, CA (NPI 1770017501).
Provider details
- NPI number
- 1770017501
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 20A14976 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 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 · 102 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 350 | 130 |
| Levothyroxine Sodium | 218 | 69 |
| Amlodipine Besylate | 216 | 82 |
| Lisinopril | 183 | 71 |
| Losartan Potassium | 142 | 55 |
| Ibuprofen | 105 | 43 |
| Furosemide | 101 | 35 |
Practice location
Mailing address
Additional practice locations (1)
- 11500 Brookshire AveDowney, CA 90241-4917Phone: (562) 904-5000
Registry dates
- Enumerated
- 2017-04-19
- Last updated
- 2022-01-26
- Certified
- 2021-01-31
Frequently asked questions
- What is Mollie Massy's NPI number?
- Mollie Massy's National Provider Identifier (NPI) is 1770017501, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mollie Massy's specialty?
- Mollie Massy is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mollie Massy located?
- Mollie Massy's practice location on file with NPPES is 1650 Response Road, Sacramento, CA 95815-4917.
- What is Mollie Massy's phone number?
- The practice phone number listed in the NPPES registry for Mollie Massy is (916) 614-4949.
- Does Mollie Massy accept Medicare?
- Mollie Massy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mollie Massy's NPI active?
- Yes — Mollie Massy's NPI (1770017501) is active in the NPPES registry as of the last update on 2022-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.