MAY Y. MAR D.O.
NPI 1194110908
Family Medicine in Union City, CA

Active since March 30, 2015PECOS EnrolledAccepts Medicare Assignment
3553 WHIPPLE RD, UNION CITY, CA 94587(510) 675-4010 Get Directions Write a Review

NPPES record last updated: December 13, 2022. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Dec 13, 2022, Jul 24, 2019, Aug 8, 2018 (3 updates tracked since 2018).

About May Y. Mar D.o. NPPES

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

MAY Y. MAR D.O. (NPI 1194110908) is an individual family medicine provider in Union City, California, licensed in California (20A20198) and active in the NPI registry since March 2015. She is enrolled in Medicare PECOS, maintains a secondary practice location in Issaquah, and is a graduate of At Still University Of Health Sciences, College Of Osteo Med, Kirksville (2015).Information from the official NPPES registry record, last updated December 13, 2022.

NPPES Registry Identity

NPI1194110908
Entity TypeIndividualFemale
Provider Legal NameMAY Y. MARCredential: D.O.
Location Address3553 WHIPPLE RDUnion City, CA 94587-1507
Mailing Address3553 Whipple RdUnion City, CA 94587-1507 · (510) 675-4010
Sole ProprietorNo
Medical School CMSAt Still University Of Health Sciences, College Of Osteo Med, KirksvilleGraduated 2015
Enumeration DateMarch 30, 2015
Last NPPES UpdateDecember 13, 20223 updates tracked since enumeration
NPPES CertifiedDecember 12, 2022
NPI 1194110908 is a valid, active identifier and passes the ISO check-digit test. How NPI validation works

Primary Specialty

Family Medicine

Taxonomy 207Q00000X · Allopathic & Osteopathic Physicians

Licensed in CA · 20A20198 Licensed in WA · OP60831174

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… Show more

3553 WHIPPLE RD, Union City, CA 94587

Also on File with NPPES

Secondary Location1
5708 E. Lake Sammamish Pkwy SE
Issaquah, WA 98029
Phone (425) 688-5488 · Fax (425) 233-6269

Medicare Participation & PECOS Enrollment Status

May Mar is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

May Mar is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 1456641851

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20230317002256

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $26.12 for a new patient copayment and $29.87 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 94587 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99203

  • Average New Patient Price $104.51
  • Minimum New Patient Price $69
  • Maximum New Patient Price $202.35
  • Average New Patient Copayment $26.12
  • Minimum New Patient Copayment $17.25
  • Maximum New Patient Copayment $50.58

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $119.48
  • Minimum Established Patient Price $23.44
  • Maximum Established Patient Price $166.46
  • Average Established Patient Copayment $29.87
  • Minimum Established Patient Copayment $5.86
  • Maximum Established Patient Copayment $41.61

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Reviews for MAY Y. MAR D.O.

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Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Family Medicine
3553 WHIPPLE RD
UNION CITY, CA 94587
Otolaryngology
3553 WHIPPLE RD
UNION CITY, CA 94587
Nurse Practitioner (Gerontology)
3553 WHIPPLE RD, BUILDING B, MED 1
UNION CITY, CA 94587
Marriage & Family Therapist
3553 WHIPPLE RD
UNION CITY, CA 94587
Speech-Language Pathologist
3553 WHIPPLE RD
UNION CITY, CA 94587
Audiologist
3553 WHIPPLE RD
UNION CITY, CA 94587
Nurse Practitioner (Family)
3553 WHIPPLE RD
UNION CITY, CA 94587
Nurse Practitioner (Family)
3553 WHIPPLE RD
UNION CITY, CA 94587
Audiologist
3553 WHIPPLE RD, BUILDING B, 2ND FLOOR
UNION CITY, CA 94587
Social Worker (Clinical)
3553 WHIPPLE RD
UNION CITY, CA 94587
Pharmacist
3553 WHIPPLE RD, 3RD FLOOR, MED STATION #4
UNION CITY, CA 94587
Internal Medicine
3553 WHIPPLE RD
UNION CITY, CA 94587
Ophthalmology
3553 WHIPPLE RD
UNION CITY, CA 94587
Dermatology
3553 WHIPPLE RD
UNION CITY, CA 94587
Obstetrics & Gynecology
3553 WHIPPLE RD
UNION CITY, CA 94587
Internal Medicine
3553 WHIPPLE RD
UNION CITY, CA 94587
Internal Medicine (Endocrinology, Diabetes & Metabolism)
3553 WHIPPLE RD
UNION CITY, CA 94587
Counselor (Mental Health)
3553 WHIPPLE RD
UNION CITY, CA 94587
Nurse Practitioner (Adult Health)
3553 WHIPPLE RD
UNION CITY, CA 94587
Internal Medicine
3553 WHIPPLE RD
UNION CITY, CA 94587

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1194110908, enumerated as an "individual" on March 30, 2015.

The provider is located at 3553 WHIPPLE RD UNION CITY, CA 94587 and the phone number is (510) 675-4010.

Family Medicine with taxonomy code 207Q00000X.

The provider might be accepting Accepts: PacificSource Health Plans. Please consult your insurance carrier or call the provider to verify.