AJAY KUMAR UPADHYAY MD
NPI 1104888155
Surgery in Oakland, CA

Q: What is Ajay Upadhyay's NPI number?

The NPI number for Ajay Upadhyay is 1104888155. It was assigned to this individual provider in the NPPES registry on April 5, 2006.

Q: What is Ajay Upadhyay's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Q: When was this NPI record last updated?

The NPPES record for Ajay Upadhyay was last updated on February 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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 April 05, 2006PECOS EnrolledAccepts Medicare Assignment

365 HAWTHORNE AVE, STE 101, OAKLAND, CA 94609(510) 465-5523(510) 832-6061 Get Directions Write a Review

NPPES record last updated: February 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 11, 2025, Sep 8, 2021 (2 updates tracked since 2021).

On this page

About Ajay Kumar Upadhyay Md NPPES

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

AJAY KUMAR UPADHYAY MD (NPI 1104888155) is an individual surgery provider in Oakland, California, licensed in California (A53488) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (1980).

NPPES Registry Identity

NPI1104888155

Entity TypeIndividualMale

Primary Taxonomy208600000X

Provider Legal NameAJAY KUMAR UPADHYAYCredential: MD

Location Address365 HAWTHORNE AVE, STE 101Oakland, CA 94609-3115

Mailing Address365 Hawthorne Ave, Ste 101Oakland, CA 94609-3115 · (510) 465-5523 · Fax (510) 832-6061

Phone(510) 465-5523

Fax(510) 832-6061

Sole ProprietorNo

Medical School CMSOtherGraduated 1980

Enumeration DateApril 5, 2006

Last NPPES UpdateFebruary 11, 20252 updates tracked since enumeration

NPPES CertifiedFebruary 11, 2025

✔ NPI 1104888155 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

License✔ Licensed in CA · A53488

Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

365 HAWTHORNE AVE, Oakland, CA 94609

Open in Google Maps ↗

Secondary Practice Locations 2

Location 13010 Colby St Ste 118Berkeley, CA 94705-2059 · Phone (510) 486-0818 · Fax (510) 486-0819

Location 227206 Calaroga Ave Ste 206Hayward, CA 94545-4300 · Phone (510) 732-5731 · Fax (510) 732-5739

Other Identifiers 1

MedicaidGR0098240CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ajay Kumar Upadhyay 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.

PECOS PAC ID244364529

PECOS Enrollment IDI20110118000545

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.

Areas of Expertise CMS Part B claims 8

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

95 services70 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.

64 services33 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

42 services42 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

36 services34 patients

Repair of groin hernia using an endoscope 49650

This procedure involves the use of an endoscope, a thin tube with a camera, to repair a hernia in the groin area. The surgeon makes small incisions, inserts the endoscope, and uses special tools to fix the hernia. This minimally invasive technique often results in quicker recovery times.

26 services26 patients

Partial removal of stomach for weight loss using an endoscope 43775

This procedure involves the use of an endoscope, a thin tube with a camera, to partially remove the stomach. It aids in weight loss by reducing the stomach's size, limiting food intake. It's a less invasive alternative to traditional weight loss surgeries.

15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94609 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

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

Most-billed visit code 99213

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 20

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

MR. HON FONG MD

Obstetrics & Gynecology (Gynecology)

365 HAWTHORNE AVE, SUITE 301
OAKLAND, CA 94609

Alameda County (510) 893-1700

ERIC L JOHNSON MD

Internal Medicine (Interventional Cardiology)

365 HAWTHORNE AVE, #201
OAKLAND, CA 94609

Alameda County (510) 452-1345

AARON PETERS PA-C

Physician Assistant (Surgical)

365 HAWTHORNE AVE
OAKLAND, CA 94609

Alameda County (510) 465-5523

RUPERT ROUPEN HOROUPIAN MD

Surgery

365 HAWTHORNE AVE, SUITE 101
OAKLAND, CA 94609

Alameda County (510) 465-5523

MR. THOMAS LEE HAMBRICK MD

Obstetrics & Gynecology

365 HAWTHORNE AVE, SUITE 301
OAKLAND, CA 94609

Alameda County (510) 893-1700

MR. EDWARD MARTIN BLUMENSTOCK MD

Obstetrics & Gynecology

365 HAWTHORNE AVE, STE 301
OAKLAND, CA 94609

Alameda County (510) 893-1700

MS. GOLDEE HANNAH GROSS MD

Obstetrics & Gynecology

365 HAWTHORNE AVE, STE 301
OAKLAND, CA 94609

Alameda County (510) 893-1700

MR. WILLIAM MORRIS ISENBERG MD

Obstetrics & Gynecology

365 HAWTHORNE AVE, SUITE 301
OAKLAND, CA 94609

Alameda County (510) 893-1700

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 Ajay Upadhyay's NPI number?

The NPI number for Ajay Upadhyay is 1104888155. It was assigned to this individual provider in the NPPES registry on April 5, 2006.

Where is Ajay Upadhyay located?

Ajay Upadhyay practices at 365 Hawthorne Ave Ste 101, Oakland, CA 94609. The listed phone number is (510) 465-5523.

What is Ajay Upadhyay's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Ajay Upadhyay enrolled in Medicare?

Yes. Ajay Upadhyay 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.

When was this NPI record last updated?

The NPPES record for Ajay Upadhyay was last updated on February 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.