Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ARI UMUTYAN M.D.
NPI 1275516171
Internal Medicine - Medical Oncology in San Francisco, CA

Q: What is Ari Umutyan's NPI number?

The NPI number for Ari Umutyan is 1275516171. It was assigned to this individual provider in the NPPES registry on November 23, 2005.

Q: What is Ari Umutyan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Q: When was this NPI record last updated?

The NPPES record for Ari Umutyan was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days 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 November 23, 2005PECOS EnrolledAccepts Medicare Assignment

1825 4TH ST FL 6, SAN FRANCISCO, CA 94143(415) 885-3800 Get Directions Write a Review

NPPES record last updated: October 15, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 15, 2026, Feb 11, 2025, Mar 29, 2021 and 3 more (6 updates tracked since 2018).

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About Ari Umutyan M.d. NPPES

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

ARI UMUTYAN M.D. (NPI 1275516171) is an individual medical oncology provider in San Francisco, California, licensed in California (A76240) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of University Of Southern California Keck School Of Medicine (2000).

NPPES Registry Identity

NPI1275516171

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameARI UMUTYANCredential: M.D.

Location Address1825 4TH ST FL 6San Francisco, CA 94143-2350

Mailing Address10 Woodland RdSaint Helena, CA 94574-9554 · (707) 967-5721

Phone(415) 885-3800

Sole ProprietorNo

Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 2000

Enumeration DateNovember 23, 2005

Last NPPES UpdateOctober 15, 20266 updates tracked since enumeration

NPPES CertifiedOctober 15, 2026

✔ NPI 1275516171 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

License✔ Licensed in CA · A76240

Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X · License A76240 (CA)

1825 4TH ST FL 6, San Francisco, CA 94143

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Secondary Practice Locations 3

Location 1575 Lennon Ln Ste 153Walnut Creek, CA 94598-2443 · Phone (925) 433-8786

Location 210 Woodland RdSaint Helena, CA 94574-9554 · Phone (707) 967-5721

Location 318990 Coyote Valley Rd Ste 5Hidden Valley Lake, CA 95467-8339 · Phone (707) 967-5721

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

Ari Umutyan M.d. 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 ID9830295807

PECOS Enrollment IDI20070508000430

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 Ari Umutyan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Adventist Health Physicians Network

3.5 mi

Orthopaedic Surgery

3727 BUCHANAN ST, SUITE. 310
San Francisco, CA 94123

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

NPI 1174820344 (707) 968-0670

St. Helena Hospital

25 mi

Psychiatric Hospital

525 OREGON ST
Vallejo, CA 94590

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

NPI 1851381990 (707) 648-2200

Providence Medical Foundation

39 mi

Obstetrics & Gynecology

1100 TRANCAS ST, SUITE 209
Napa, CA 94558

Reassigned Medicare billing, California enrollment
1,699 clinicians in this Medicare group

NPI 1205131950 (707) 251-1850

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 13

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 high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

514 services137 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.

379 services175 patients

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.

172 services110 patients

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

169 services117 patients

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

111 services76 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

54 services54 patients

Irrigation of implanted venous access drug delivery device 96523

Irrigation of an implanted venous access drug delivery device is a procedure to clean or unblock the device. This device is implanted under your skin to allow easy, frequent, and long-term access to your veins for medication delivery. The process involves flushing the device with a sterile solution to ensure it works properly.

40 services13 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

33 services23 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

18 services16 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.

16 services15 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

15 services15 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.

15 services15 patients

Biopsy and aspiration of bone marrow sample for diagnosis 38222

A bone marrow biopsy and aspiration is a procedure where a small amount of bone marrow is removed for testing. It involves inserting a needle into a bone, typically the hip, to collect a sample. It can help diagnose various diseases and monitor treatment effectiveness.

12 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 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

$202.35 typical visit price

range $69.00 – $202.35

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

Most-billed visit code 99205

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 4

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

Ostomy skin barrier, with flange (solid, flexible or accordion), without built-in convexity, 4 x 4 inches or smaller, each A4414

DME-Orthotic Devices · category DF010N

1 supplier11 claims370 services$4.75 avg. paid by Medicare

Ostomy pouch, closed; for use on barrier with non-locking flange, with filter (2 piece), each A4419

DME-Orthotic Devices · category DF010N

1 supplier12 claims780 services$1.67 avg. paid by Medicare

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

DME-Oxygen and Supplies · category DC000N

1 supplier12 claims12 services$17.61 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

1 supplier11 claims11 services$89.29 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.

MISS FEDNA MORENCY P.A.-C, ATC

Physician Assistant (Surgical)