YAHYA AHMED M.D.
NPI 1124283312
Internal Medicine in Hayward, CA

Q: What is Yahya Ahmed's NPI number?

The NPI number for Yahya Ahmed is 1124283312. It was assigned to this individual provider in the NPPES registry on July 28, 2008.

Q: What is Yahya Ahmed's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Yahya Ahmed was last updated on July 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since July 28, 2008PECOS Enrolled

27200 CALAROGA AVE, HAYWARD, CA 94545(510) 264-4000 Get Directions Write a Review

NPPES record last updated: July 8, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 8, 2026, Apr 24, 2026, Mar 22, 2016 (3 updates tracked since 2016).

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About Yahya Ahmed M.d. NPPES

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

YAHYA AHMED M.D. (NPI 1124283312) is an individual internal medicine provider in Hayward, California, licensed in California (C162207) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1124283312

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameYAHYA AHMEDCredential: M.D.

Location Address27200 CALAROGA AVEHayward, CA 94545-4383

Mailing Address2415 San Ramon Valley Blvd Ste 4, Unit 199San Ramon, CA 94583-1651 · (440) 623-1313

Phone(510) 264-4000

Sole ProprietorYes

Enumeration DateJuly 28, 2008

Last NPPES UpdateJuly 8, 20263 updates tracked since enumeration

NPPES CertifiedJuly 8, 2026

✔ NPI 1124283312 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · C162207

Definition

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.

27200 CALAROGA AVE, Hayward, CA 94545

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Yahya Ahmed 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.

Medicare Billing Reassignments

Medicare enrollment records show Yahya Ahmed reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Alameda Health System

1.6 mi

Federally Qualified Health Center (FQHC)

664 SOUTHLAND MALL
Hayward, CA 94545

Reassigned Medicare billing, California enrollment
900 clinicians in this Medicare group

NPI 1023219821 (510) 266-1700

Houston In Patient Physician Associates PLLC

1,617 mi

Geriatric Medicine

4645 SWEETWATER BLVD STE 200
Sugar Land, TX 77479

Reassigned Medicare billing, Texas enrollment
72 clinicians in this Medicare group

NPI 1871892646 (713) 777-5334

Ut Physicians

1,625 mi

Anesthesiology

6410 FANNIN ST, 1500
Houston, TX 77030

Reassigned Medicare billing, Texas enrollment
3,111 clinicians in this Medicare group

NPI 1033157821 (832) 325-7325

Medical Center Hospitalist Associates PLLC

1,625 mi

Internal Medicine

6565 FANNIN ST
Houston, TX 77030

Reassigned Medicare billing, Texas enrollment
45 clinicians in this Medicare group

NPI 1770855710 (713) 426-9171

Baylor College Of Medicine

1,626 mi

Medical Genetics, Ph.D. Medical Genetics

7200 CAMBRIDGE ST FL 10
Houston, TX 77030

Reassigned Medicare billing, Texas enrollment
2,554 clinicians in this Medicare group

NPI 1881026664 (713) 798-0000

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 5

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

557 services144 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

240 services175 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

224 services213 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

107 services104 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94545 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

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

2 suppliers16 claims16 services$14.27 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

3 suppliers18 claims18 services$66.28 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

JONAS CRUZ MASIKAT M.D

Internal Medicine