DR. TAEJOON AHN M.D.
NPI 1639198757
Family Medicine in Walnut Creek, CA

Active since July 19, 2006PECOS EnrolledAccepts Medicare Assignment
85.73/100
CMS Quality Rating
1455 MONTEGO, SUITE 205, WALNUT CREEK, CA 94598(925) 939-4444(925) 939-5010 Get Directions Write a Review

NPPES record last updated: June 17, 2012. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Taejoon Ahn M.d. NPPES

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

DR. TAEJOON AHN M.D. (NPI 1639198757) is an individual family medicine provider in Walnut Creek, California, licensed in California (A67062) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (1997).

NPPES Registry Identity

NPI1639198757
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. TAEJOON AHNCredential: M.D.
Location Address1455 MONTEGO, SUITE 205Walnut Creek, CA 94598-2990
Mailing AddressDept 34929, P.o. Box 39000San Francisco, CA 94139-0001 · (925) 952-2828 · Fax (925) 952-2850
Fax(925) 939-5010
Sole ProprietorNo
Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 1997
Enumeration DateJuly 19, 2006
Last NPPES UpdateJune 17, 2012
NPI 1639198757 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License Licensed in CA · A67062
Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

1455 MONTEGO, Walnut Creek, CA 94598

Other Identifiers 4

Medicaid00A670620CA
Medicare PIN00A670624CA
Medicare UPINH76997CA
Medicare PINP00055639CA

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

Dr. Taejoon Ahn 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 ID9234201955
PECOS Enrollment IDI20080711000331
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 3

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.

Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
609 services602 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
547 services547 patients
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage 90694
The quadrivalent inactivated influenza vaccine is a shot given to protect against four strains of the flu virus. This 0.5 ml dosage helps your body develop immunity to the virus. It's an important step in preventing flu-related complications.
37 services37 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94598 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
$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.

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.

85.73/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality82.68
Promoting Interoperability99
Improvement Activities40
Cost70.58

Other Providers at the Same Location NPPES 8

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

Family Medicine
1455 MONTEGO, SUITE 104
WALNUT CREEK, CA 94598
Family Medicine (Adult Medicine)
1455 MONTEGO, #104
WALNUT CREEK, CA 94598
Obstetrics & Gynecology
1455 MONTEGO, STE 100
WALNUT CREEK, CA 94598
Urology
1455 MONTEGO, SUITE 102
WALNUT CREEK, CA 94598
Nurse Practitioner (Pediatrics)
1455 MONTEGO
WALNUT CREEK, CA 94598
Urology
1455 MONTEGO, STE 102
WALNUT CREEK, CA 94598
Internal Medicine
1455 MONTEGO, SUITE 207
WALNUT CREEK, CA 94598
Obstetrics & Gynecology (Gynecologic Oncology)
1455 MONTEGO, SUITE 100
WALNUT CREEK, CA 94598

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 Taejoon Ahn's NPI number?

The NPI number for Taejoon Ahn is 1639198757. It was assigned to this individual provider in the NPPES registry on July 19, 2006.

Where is Taejoon Ahn located?

Taejoon Ahn practices at 1455 Montego Suite 205, Walnut Creek, CA 94598. The listed phone number is (925) 939-4444.

What is Taejoon Ahn's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Taejoon Ahn enrolled in Medicare?

Yes. Taejoon Ahn 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 Taejoon Ahn was last updated on June 17, 2012. NPI Profile syncs with the weekly NPPES data releases published by CMS.