OrganizationActive
Massen Medical Office
NPI 1073549283 · Family Medicine Physician · Hayward, CA
Provider details
- NPI number
- 1073549283
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Arkady Massen, Medical Doctor(510) 783-0536
- License
- A527260 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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.
Practice location
19682 Hesperian Blvd
1393 Santa Rita Rd., #a
Hayward, CA 94541-4752
Phone: (510) 783-0536
Fax: (510) 315-1103
Street-level locationGet directions
Mailing address
19682 Hesperian Blvd
Hayward, CA 94541-4752
Registry dates
- Enumerated
- 2006-06-23
- Last updated
- 2020-08-22
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.