DR. MICHAEL A. MATTHAY M.D. NPI 1891734497

NPI Information

  • NPI: 1891734497
  • Provider Name: DR. MICHAEL A. MATTHAY, M.D.
  • Classification: Internal Medicine - 207R00000X
  • Entity Type: Individual
  • PECOS Registration: Yes
  • Address: 505 PARNASSUS AVE
    SAN FRANCISCO, CA
    ZIP 94143
  • Phone: (415) 353-2873

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NPI Details

DR. Michael A. Matthay, M.D. is an internal medicine in San Francisco, CA with 53 years of experience. The provider is a physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. DR. Michael A. Matthay, M.D. NPI is 1891734497. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

Education
Medical School: PERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduation Year:1973

The provider's business location address is:

505 PARNASSUS AVE
SAN FRANCISCO, CA
ZIP 94143-204
Phone: (415) 353-2873
Fax: (415) 353-1990

The NPI 1891734497 is registered in the Medicare Provider, Enrollment, Chain and Ownership System (PECOS). The provider is legally eligible to order and refer Part B (Clinical Laboratory and Imaging), Durable Medical Equipment, Part A Home Health Agency (HHA), Power Mobility Devices.

The following top HCPCS codes were publicly reported for this provider under the Medicare program for the year 2016. The reported codes are based on the top codes for each available Medicare specialty, excluding evaluation and management codes.

  • Critical care, first 30-74 minutes (HCPCS:99291)
  • Follow-up hospital inpatient care per day, typically 25 minutes (HCPCS:99232)

The enumeration date for this NPI number is 6/6/2006 and was last updated on 7/24/2008.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No. Taxonomy Code Taxonomy Clasification Taxonomy Specialization License Number License State Primary
1207RC0200XInternal MedicineCritical Care MedicineG33560CALIFORNIANo
2207RP1001XInternal MedicinePulmonary DiseaseG33560CALIFORNIANo
3207R00000XInternal MedicineG33560CALIFORNIAYes

Other Identifiers

The following information regarding additional identifiers associated to this NPI record includes the other identifier number, identifier type, identifier state and issuer.

No. Other Provider Identifier Other Provider Identifier Type Other Provider Identifier State Other Provider Identifier Issuer
100G335600MEDICAIDCALIFORNIA
2A45592MEDICARE UPINCALIFORNIA
300G335600MEDICARE PINCALIFORNIA

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

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