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DR. EVELYN MOK-LIN M.D.
NPI 1255470746
Obstetrics & Gynecology - Reproductive Endocrinology in San Francisco, CA

Active since February 05, 2007PECOS Enrolled
499 ILLINOIS ST, SAN FRANCISCO, CA 94158(415) 353-7475(415) 353-7744 Get Directions Write a Review

NPPES record last updated: August 4, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Evelyn Mok-lin M.d. NPPES

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

DR. EVELYN MOK-LIN M.D. (NPI 1255470746) is an individual reproductive endocrinology provider in San Francisco, California, licensed in California (A124528) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1255470746
Entity TypeIndividualFemale
Primary Taxonomy207VE0102X
Provider Legal NameDR. EVELYN MOK-LINCredential: M.D.
Location Address499 ILLINOIS STSan Francisco, CA 94158-2518
Mailing Address499 Illinois StSan Francisco, CA 94158-2518 · (415) 353-7475 · Fax (415) 353-7744
Phone(415) 353-7475
Fax(415) 353-7744
Sole ProprietorNo
Enumeration DateFebruary 5, 2007
Last NPPES UpdateAugust 4, 2023
NPPES CertifiedAugust 4, 2023
✔ NPI 1255470746 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · Reproductive EndocrinologyAllopathic & Osteopathic Physicians
Taxonomy Code207VE0102X
License✔ Licensed in CA · A124528
Definition
An obstetrician/gynecologist who is capable of managing complex problems relating to reproductive endocrinology and infertility.
Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License 229086 (MA)
499 ILLINOIS ST, San Francisco, CA 94158
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Evelyn Mok-lin 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 Reassignments

2

Medicare enrollment records show Evelyn Mok-lin reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California San Francisco
3.9 mi
Surgery
400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 5,645 clinicians in this Medicare group
NPI 1346329380 (415) 353-2161
Ucsf Medical Group Business Services
3.9 mi
Internal Medicine
400 PARNASSUS AVE
San Francisco, CA 94122
  • Reassigned Medicare billing, California enrollment
  • 5,544 clinicians in this Medicare group
NPI 1477624104 (415) 353-2808

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 94158 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
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.

Other Providers at the Same Location NPPES 7

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

BRIDGET ROCHIOS CNM, WHNP
Nurse Practitioner (Women's Health)
499 ILLINOIS ST
SAN FRANCISCO, CA 94158
San Francisco County (415) 353-7475
SAVANIE MAITHRIPALA MSC LCGC
Genetic Counselor, MS
499 ILLINOIS ST
SAN FRANCISCO, CA 94158
San Francisco County (312) 866-5602
MS. KAJAL VERMA
Obstetrics & Gynecology (Reproductive Endocrinology)
499 ILLINOIS ST
SAN FRANCISCO, CA 94158
San Francisco County (415) 353-7475
DR. ZEYNEP CANAN KOC MD
Obstetrics & Gynecology
499 ILLINOIS ST
SAN FRANCISCO, CA 94158
San Francisco County (415) 353-7475
KATHARINE SEEGER NP
Nurse Practitioner (Women's Health)
499 ILLINOIS ST
SAN FRANCISCO, CA 94158
San Francisco County (415) 353-7475
MAREN SHAPIRO EGER MD
Obstetrics & Gynecology
499 ILLINOIS ST
SAN FRANCISCO, CA 94158
San Francisco County (415) 353-3071
MR. RICHARD JASON SCOTT S. OKAMURA M.S.
Genetic Counselor, MS
499 ILLINOIS ST, 6TH FLOOR
SAN FRANCISCO, CA 94158
San Francisco County (415) 514-5849

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 Evelyn Mok-lin's NPI number?

The NPI number for Evelyn Mok-lin is 1255470746. It was assigned to this individual provider in the NPPES registry on February 5, 2007.

Where is Evelyn Mok-lin located?

Evelyn Mok-lin practices at 499 Illinois St, San Francisco, CA 94158. The listed phone number is (415) 353-7475.

What is Evelyn Mok-lin's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Reproductive Endocrinology, with taxonomy code 207VE0102X.

Is Evelyn Mok-lin enrolled in Medicare?

Yes. Evelyn Mok-lin is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Evelyn Mok-lin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Evelyn Mok-lin reassigns Medicare benefits to 2 organizations: University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, CA). 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 Evelyn Mok-lin'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 Evelyn Mok-lin was last updated on August 4, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.