Jay Masserman, M.D.
NPI 1598743510 · Obstetrics & Gynecology Physician · Santa Ana, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jay Masserman, M.D. is a Obstetrics & Gynecology Physician provider in Santa Ana, CA (NPI 1598743510).
Provider details
- NPI number
- 1598743510
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G33687 (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
20 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.
Practice location
Mailing address
Additional practice locations (1)
- 11180 Warner AveFountain Valley, CA 92708-7501Phone: (714) 556-0536Fax: (714) 435-9640
Registry dates
- Enumerated
- 2006-01-09
- Last updated
- 2023-03-14
- Certified
- 2023-03-14
Frequently asked questions
- What is Jay Masserman's NPI number?
- Jay Masserman's National Provider Identifier (NPI) is 1598743510, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jay Masserman's specialty?
- Jay Masserman is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Jay Masserman located?
- Jay Masserman's practice location on file with NPPES is 800 N Main St, Santa Ana, CA 92701-3576.
- What is Jay Masserman's phone number?
- The practice phone number listed in the NPPES registry for Jay Masserman is (657) 282-6355.
- Does Jay Masserman accept Medicare?
- Jay Masserman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jay Masserman's NPI active?
- Yes — Jay Masserman's NPI (1598743510) is active in the NPPES registry as of the last update on 2023-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.