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DR. HONG-AN JAN M.D.
NPI 1255332979
Specialist in Garden Grove, CA

Active since August 03, 2005PECOS Enrolled
12555 GARDEN GROVE BLVD, SUITE 202, GARDEN GROVE, CA 92843(714) 538-1288(714) 538-4913 Get Directions Write a Review

NPPES record last updated: October 5, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Hong-an Jan M.d. NPPES

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

DR. HONG-AN JAN M.D. (NPI 1255332979) is an individual specialist in Garden Grove, California, licensed in California (A31743) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1255332979
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameDR. HONG-AN JANCredential: M.D.
Location Address12555 GARDEN GROVE BLVD, SUITE 202Garden Grove, CA 92843-1902
Mailing Address12555 Garden Grove Blvd, Suite 202Garden Grove, CA 92843-1902 · (714) 538-1288 · Fax (714) 538-4913
Phone(714) 538-1288
Fax(714) 538-4913
Sole ProprietorYes
Enumeration DateAugust 3, 2005
Last NPPES UpdateOctober 5, 2012
✔ NPI 1255332979 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in CA · A31743
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
12555 GARDEN GROVE BLVD, Garden Grove, CA 92843
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Other Identifiers 2

Medicare ID-Type UnspecifiedA31743CA
Medicaid00A317430CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Hong-an Jan 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 Reassignment

Medicare enrollment records show Hong-an Jan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Hong-An Jan MD Inc
Same address
Medical Specialty
12555 GARDEN GROVE BLVD, #202
Garden Grove, CA 92843
  • Reassigned Medicare billing, California enrollment
NPI 1841564143 (714) 538-1288

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

ANDREW H AHN MD PROFESSIONAL CORPORATION
Surgery (Vascular Surgery)
12555 GARDEN GROVE BLVD, SUITE 403
GARDEN GROVE, CA 92843
Orange County (714) 530-0303
PUNEET K CHAHAL, M.D. INC
Internal Medicine (Infectious Disease)
12555 GARDEN GROVE BLVD, #405
GARDEN GROVE, CA 92843
Orange County (714) 530-8042
DR. RAMAN CHOPRA MD
Pediatrics
12555 GARDEN GROVE BLVD, SUITE 404
GARDEN GROVE, CA 92843
Orange County (714) 638-0232
DR. WILLIAM G ANNAN MD
Specialist
12555 GARDEN GROVE BLVD, SUITE 302
GARDEN GROVE, CA 92843
Orange County (714) 530-3270
MICHAEL S FINNEY M.D.
Internal Medicine (Infectious Disease)
12555 GARDEN GROVE BLVD, STE 405
GARDEN GROVE, CA 92843
Orange County (714) 530-8042
MS. SAADIA PAREKH PA-C
Physician Assistant
12555 GARDEN GROVE BLVD, #206
GARDEN GROVE, CA 92843
Orange County (714) 537-6595
JANAK R. CHOPRA M.D.INC.
Clinic/Center
12555 GARDEN GROVE BLVD, #404
GARDEN GROVE, CA 92843
Orange County (714) 638-0232
RAI CARE CENTERS OF SOUTHERN CALIFORNIA I, LLC
Clinic/Center (End-Stage Renal Disease (ESRD) Treatment)
12555 GARDEN GROVE BLVD, SUITE 100
GARDEN GROVE, CA 92843
Orange County (714) 741-7255

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 Hong-an Jan's NPI number?

The NPI number for Hong-an Jan is 1255332979. It was assigned to this individual provider in the NPPES registry on August 3, 2005.

Where is Hong-an Jan located?

Hong-an Jan practices at 12555 Garden Grove Blvd Suite 202, Garden Grove, CA 92843. The listed phone number is (714) 538-1288.

What is Hong-an Jan's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Hong-an Jan enrolled in Medicare?

Yes. Hong-an Jan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Hong-an Jan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hong-an Jan reassigns Medicare benefits to Hong-An Jan MD Inc (Garden Grove, CA). The 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 Hong-an Jan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Hong-an Jan was last updated on October 5, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years 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.