DR. MARK S FAN MD
NPI 1164685632
Obstetrics & Gynecology in Bellevue, WA

Q: What is Mark Fan's NPI number?

The NPI number for Mark Fan is 1164685632. It was assigned to this individual provider in the NPPES registry on July 5, 2008.

Q: What is Mark Fan's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Fan was last updated on February 3, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since July 05, 2008PECOS Enrolled

1515 116TH AVE NE STE 205, BELLEVUE, WA 98004(310) 866-3707(425) 999-4858 Get Directions Write a Review

NPPES record last updated: February 3, 2021. Verified against the NPPES registry weekly; last sync: November 08, 2026.

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About Dr. Mark S Fan Md NPPES

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

DR. MARK S FAN MD (NPI 1164685632) is an individual obstetrics & gynecology provider in Bellevue, Washington, licensed in New York (NOT YET) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS and is a graduate of Other (2006).

NPPES Registry Identity

NPI1164685632

Entity TypeIndividualMale

Primary Taxonomy207V00000X

Provider Legal NameDR. MARK S FANCredential: MD

Location Address1515 116TH AVE NE STE 205Bellevue, WA 98004-3811

Mailing AddressPo Box 741Mercer Island, WA 98040-0741 · Fax (425) 999-4858

Phone(310) 866-3707

Fax(425) 999-4858

Sole ProprietorNo

Medical School CMSOtherGraduated 2006

Enumeration DateJuly 5, 2008

Last NPPES UpdateFebruary 3, 2021

NPPES CertifiedFebruary 3, 2021

✔ NPI 1164685632 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

Licenses✔ Licensed in NY · NOT YET✔ Licensed in WA · MD60122545✔ Licensed in CA · A112478

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

1515 116TH AVE NE STE 205, Bellevue, WA 98004

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Other Identifiers 1

Other0264461WA · State L&i

Accepted Insurance

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark S Fan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID345373189

PECOS Enrollment IDI20180703003241

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 Mark Fan reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Obstetrix Medical Group Of Washington Inc Ps

6.4 mi

Maternal & Fetal Medicine

1229 MADISON ST STE 750
Seattle, WA 98104

Reassigned Medicare billing, Washington enrollment
129 clinicians in this Medicare group

NPI 1861599573 (206) 386-2101

Northbay Healthcare Group

640 mi

General Acute Care Hospital

1000 NUT TREE RD
Vacaville, CA 95687

Reassigned Medicare billing, California enrollment
Medicare enrollment name: Northbay Physicians Surgery Center, LLC
516 clinicians in this Medicare group

NPI 1255483202 (707) 646-3401

Northeast Valley Health Corporation

931 mi

Community Health

23763 VALENCIA BLVD
Valencia, CA 91355

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

NPI 1730180118 (661) 287-1551

Obhg California, P.C.

2,224 mi

Obstetrics & Gynecology

777 LOWNDES HILL RD BLDG 1
Greenville, SC 29607

Reassigned Medicare billing, California enrollment
Medicare enrollment name: Obhg California PC
711 clinicians in this Medicare group

NPI 1215258892 (800) 967-2289

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98004 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

$143.76 typical visit price

range $63.67 – $189.37

Typical copayment $35.94 (range $15.91 – $47.34)

Most-billed visit code 99204

Established Patient

$78.74 typical visit price

range $21.12 – $155.00

Typical copayment $19.68 (range $5.28 – $38.75)

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 3

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

OLGA ABRAMOVA

Nurse Practitioner (Adult Health)

1515 116TH AVE NE STE 205
BELLEVUE, WA 98004

King County (425) 698-3033

JENNIFER A BLASI N.D. LAC EAMP

Naturopath

1515 116TH AVE NE STE 205
BELLEVUE, WA 98004

King County (206) 618-6549

KOR PT, LLC

Clinic/Center (Physical Therapy)

1515 116TH AVE NE STE 205
BELLEVUE, WA 98004

King County (425) 384-9400

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 Mark Fan's NPI number?

The NPI number for Mark Fan is 1164685632. It was assigned to this individual provider in the NPPES registry on July 5, 2008.

Where is Mark Fan located?

Mark Fan practices at 1515 116th Ave NE Ste 205, Bellevue, WA 98004. The listed phone number is (310) 866-3707.

What is Mark Fan's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Mark Fan enrolled in Medicare?

Yes. Mark Fan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mark Fan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Fan reassigns Medicare benefits to 4 organizations: Obstetrix Medical Group Of Washington Inc Ps (Seattle, WA), Northbay Healthcare Group (Vacaville, CA), Northeast Valley Health Corporation (Valencia, CA) and Obhg California, P.C. (Greenville, SC). Each 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 Mark Fan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mark Fan accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Mark Fan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Mark Fan was last updated on February 3, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.