DR. UMER HAYYAT MD
NPI 1851812499
Internal Medicine in San Diego, CA
About Dr. Umer Hayyat Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. UMER HAYYAT MD (NPI 1851812499) is an individual internal medicine provider in San Diego, California, licensed in California (A169544) and active in the NPI registry since July 2017. He is enrolled in Medicare PECOS, maintains a secondary practice location in Hanford, and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Umer Hayyat Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
11Medicare enrollment records show Umer Hayyat reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 1,437 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 78 clinicians in this Medicare group
San Diego, CA 92120
- Reassigned Medicare billing, California enrollment
- 50 clinicians in this Medicare group
Poway, CA 92064
- Reassigned Medicare billing, California enrollment
- 962 clinicians in this Medicare group
Escondido, CA 92029
- Reassigned Medicare billing, California enrollment
- 100 clinicians in this Medicare group
Porterville, CA 93257
- Reassigned Medicare billing, California enrollment
- 159 clinicians in this Medicare group
Hanford, CA 93230
- Reassigned Medicare billing, California enrollment
- 56 clinicians in this Medicare group
Dallas, TX 75244
- Reassigned Medicare billing, Virginia enrollment
- 501 clinicians in this Medicare group
Salem, VA 24153
- Reassigned Medicare billing, Virginia enrollment
- 181 clinicians in this Medicare group
Roanoke, VA 24015
- Reassigned Medicare billing, Virginia enrollment
- 101 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92123 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92123
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Umer Hayyat's NPI number?
The NPI number for Umer Hayyat is 1851812499. It was assigned to this individual provider in the NPPES registry on July 5, 2017.
Where is Umer Hayyat located?
Umer Hayyat practices at 7901 Frost St, San Diego, CA 92123. The listed phone number is (858) 939-3400.
What is Umer Hayyat's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Umer Hayyat enrolled in Medicare?
Yes. Umer Hayyat is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Umer Hayyat's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Umer Hayyat reassigns Medicare benefits to 11 organizations: Emergency And Acute Care Medical Corporation (San Diego, CA), Focus On Health Inc (San Diego, CA), East Campus Hospitalist Medical Group, Inc. (San Diego, CA), Galen Inpatient Physicians Inc (Poway, CA), Palomar Hospitalist Medical Group, Inc (Escondido, CA) and 6 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Umer Hayyat's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Umer Hayyat accept?
Health plans from HMSA, Oscar Health and Oscar Insurance Company list Umer Hayyat as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Umer Hayyat was last updated on November 11, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Umer Hayyat, MD · NPI 1851812499
Internal Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since July 5, 2017.
## Identity
- **NPI:** 1851812499 (Entity type: Individual)
- **Enumerated:** July 5, 2017
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A169544 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 7901 FROST ST, San Diego, CA 92123-2701
- **Phone:** (858) 939-3400
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 11 organizations under Medicare reassignment (form CMS-855R): Emergency And Acute Care Medical Corporation (NPI 1437103942, San Diego, CA); Focus On Health Inc (NPI 1497450530, San Diego, CA); East Campus Hospitalist Medical Group, Inc. (NPI 1184490385, San Diego, CA); Galen Inpatient Physicians Inc (NPI 1326389289, Poway, CA); Palomar Hospitalist Medical Group, Inc (NPI 1801466826, Escondido, CA); and 6 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** November 11, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1851812499) · Data from the CMS NPPES public registry.