MELISSA CAROLYN CHIANG
NPI 1609339159
Internal Medicine in San Francisco, CA

Q: What is Melissa Chiang's NPI number?

The NPI number for Melissa Chiang is 1609339159. It was assigned to this individual provider in the NPPES registry on April 11, 2019.

Q: What is Melissa Chiang's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Melissa Chiang was last updated on August 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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 April 11, 2019PECOS EnrolledAccepts Medicare Assignment

1545 DIVISADERO ST, SAN FRANCISCO, CA 94143(415) 353-7900(312) 929-0373 Get Directions Write a Review

NPPES record last updated: August 20, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 11, 2025, Jul 11, 2022, Apr 11, 2019 (3 updates tracked since 2019).

On this page

About Melissa Carolyn Chiang NPPES

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

MELISSA CAROLYN CHIANG (NPI 1609339159) is an individual internal medicine provider in San Francisco, California, licensed in California (A202849) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS, is affiliated with Advocate Trinity Hospital, and maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1609339159

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameMELISSA CAROLYN CHIANG

Location Address1545 DIVISADERO STSan Francisco, CA 94143-3400

Mailing AddressPo Box 746715Atlanta, GA 30374-6715 · (773) 352-1515 · Fax (312) 929-0373

Phone(415) 353-7900

Fax(312) 929-0373

Sole ProprietorNo

Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 2019

Enumeration DateApril 11, 2019

Last NPPES UpdateAugust 20, 20253 updates tracked since enumeration

NPPES CertifiedAugust 20, 2025

✔ NPI 1609339159 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in CA · A202849✔ Licensed in IL · 036.165304

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1545 DIVISADERO ST, San Francisco, CA 94143

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Secondary Practice Location 1

Location 11715 E 95th StChicago, IL 60617-4708 · Phone (773) 768-4437 · Fax (773) 564-3515

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

Melissa Carolyn Chiang 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 ID3577896968

PECOS Enrollment IDI20230818000140, I20250822000558

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 2

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 straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

62 services40 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

13 services13 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Advocate Trinity Hospital

Acute Care Hospitals · Chicago, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140048

Location2320 E 93rd StChicago, IL 60617 · Cook County

Emergency services Birthing friendly

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

$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 20

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

MICHALLE RAMIREZ-MCLAUGHLIN RN, FNP-C

Nurse Practitioner (Family)

1545 DIVISADERO ST
SAN FRANCISCO, CA 94143

San Francisco County (415) 353-7900

ELISABETH THAMES BOEHME ASKIN M.D.

Internal Medicine

1545 DIVISADERO ST, SUITE 322
SAN FRANCISCO, CA 94143

San Francisco County (510) 435-8580

DR. KAPIL SAXENA M.D.

Internal Medicine (Medical Oncology)

1545 DIVISADERO ST
SAN FRANCISCO, CA 94143

San Francisco County (415) 353-7900

SACHIN KUMAR GARG MD

Internal Medicine

1545 DIVISADERO ST
SAN FRANCISCO, CA 94143

San Francisco County (415) 353-7900

DR. MAKI AOKI MD, ND

Internal Medicine

1545 DIVISADERO ST
SAN FRANCISCO, CA 94143

San Francisco County (415) 353-7900

DR. RANA RAND D.O.

Physical Medicine & Rehabilitation

1545 DIVISADERO ST
SAN FRANCISCO, CA 94143

San Francisco County (415) 353-7700

SHAWN LAURA TORRES MD

Internal Medicine

1545 DIVISADERO ST
SAN FRANCISCO, CA 94143

San Francisco County (415) 353-7900

DR. MIKE KAI WICK CHENG M.D.

Internal Medicine

1545 DIVISADERO ST
SAN FRANCISCO, CA 94143

San Francisco County (415) 353-7900

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 Melissa Chiang's NPI number?

The NPI number for Melissa Chiang is 1609339159. It was assigned to this individual provider in the NPPES registry on April 11, 2019.

Where is Melissa Chiang located?

Melissa Chiang practices at 1545 Divisadero St, San Francisco, CA 94143. The listed phone number is (415) 353-7900.

What is Melissa Chiang's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Melissa Chiang enrolled in Medicare?

Yes. Melissa Chiang 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.

Is Melissa Chiang affiliated with any hospitals?

According to CMS data, Melissa Chiang is affiliated with Advocate Trinity Hospital.

When was this NPI record last updated?

The NPPES record for Melissa Chiang was last updated on August 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.