Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mollie Massy, DO

Individual provider Family Medicine Physician · NPI 1770017501

Mollie Massy, DO practises Osteopathic Manipulative Medicine in Sacramento, California. Qualified in 2015, 11 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
11
Licensed in
CA
In the registry since
2017
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1650 Response Rd
Sacramento, CA 95815-4917
Phone: (916) 614-4949
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 11500 Brookshire Ave, Downey, CA 90241-4917 — (562) 904-5000

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 20A14976 (CA)

Record details

NPI number1770017501
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 19, 2017
Last updated in NPPESJanuary 26, 2022
Certification dateJanuary 31, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOSTEOPATHIC MANIPULATIVE MEDICINE
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients11
Services billed 20 a service is one billed item, such as a visit, a test or a procedure
Average patient age63

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Permanente Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 10941 clinicians in the practice; 12 are shown here.

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