DR. DIANA MARIA MOKAYA M.D.
NPI 1023458528
Family Medicine in Union City, CA

Q: What is the provider's specialty?

The provider's specialty is Family Medicine with taxonomy code 207Q00000X.

Active since June 28, 2013PECOS Enrolled

33255 9TH ST, UNION CITY, CA 94587(510) 471-5880 Get Directions Write a Review

NPPES record last updated: May 5, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: May 5, 2026, Jun 1, 2023, Sep 7, 2021 (3 updates tracked since 2021).

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About Dr. Diana Maria Mokaya M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DIANA MARIA MOKAYA M.D. (NPI 1023458528) is an individual family medicine provider in Union City, California, licensed in California (A133542) and active in the NPI registry since June 2013. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1023458528

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameDR. DIANA MARIA MOKAYACredential: M.D.

Location Address33255 9TH STUnion City, CA 94587-2137

Mailing Address33255 9th StUnion City, CA 94587-2137 · (510) 471-5880

Phone(510) 471-5880

Sole ProprietorNo

Enumeration DateJune 28, 2013

Last NPPES UpdateMay 5, 20263 updates tracked since enumeration

NPPES CertifiedMay 5, 2026

✔ NPI 1023458528 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in CA · A133542

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

33255 9TH ST, Union City, CA 94587

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Other Names 1

Former Name (1)Diana Maria Tucci

Secondary Practice Locations 2

Location 122331 Mission BlvdHayward, CA 94541-3911 · Phone (510) 471-5880

Location 216110 E 14th StAshland, CA 94578-3002 · Phone (510) 471-5880

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Diana Maria Mokaya M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94587 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$104.51 typical visit price

range $69.00 – $202.35

Typical copayment $26.12 (range $17.25 – $50.58)

Most-billed visit code 99203

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 19

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. MARTHA VIRGINIA CLINE NP

Nurse Practitioner