Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Peter C Richards , MD

Surgery • San Francisco, CA

Active NPI 1548323694 Individual Practitioner Male Practitioner
Practice location in NPPES

3838 California St, Suite 612
San Francisco, CA 94118

Call 4152210736 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

3838 California St
Suite 612

San Francisco, CA 94118

Telephone 4152210736
Fax 4152213583
Organization at the Same NPPES Address or Phone
M Ming Quan Md Inc Facility NPI 1508809286

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

30-day fills

31 standardized 30-day fills in 2016

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$841 in 2016

The total cost of these prescriptions in 2016, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2016.

Open Payments general payments, program year 2020

All general payments: $84.61 across 2 records.

By nature of payment

  • Food and Beverage: $84.61 across 2 records.

Reporting-company totals

  • Sientra, Inc.: $84.61 across 2 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2020 (published June 30, 2026).

Guide: How to read an Open Payments record

NPI first issued

2006

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.

Guide: How Medicare covers telehealth

Compared with the same specialty in San Francisco and California

Billing and prescribing volume is not a quality rating.

Medicare Part D

Comparisons use 2024 data. The latest CMS data for Dr. Richards are from 2016.

216 active clinicians are listed under Surgery with a practice address in San Francisco, CA (3,129 in California).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in San Francisco

20.4% of these 216 clinicians have the CMS telehealth indicator.

46.3% of these 216 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2016), CMS Open Payments (2020), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2020

Program year 2020 (payments made January 1 – December 31, 2020): fewer than 11 records totaling $84.61.

Manufacturer Payment Nature Product Type Amount ($)
Sientra, Inc.
Food and Beverage
Cash or cash equivalent
SIENTRA HIGH STRENGTH COHESIVE SILICONE GEL BREAST IMPLANT General $48.67
Sientra, Inc.
Food and Beverage
Cash or cash equivalent
SIENTRA HIGH STRENGTH COHESIVE SILICONE GEL BREAST IMPLANT General $35.94

Source: CMS Open Payments, program year 2020, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2016.

CMS Part D · Data Year 2016
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Anastrozole Anastrozole 15 930 $840.74 —

Source: CMS Part D by Provider and Drug, 2016; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

License # reported to NPPES CA G47588

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Medical Board of California.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Other Identifier Type 2 Npi
1366688855 (CA)
Other Identifier Medicare Provider Number
00G475880 (CA)
Other Identifier Ptan
BE547Z (CA)

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

39 listed
Dr. Michael Abel , MD

Colon & Rectal Surgery

NPI 1447253380

Doctor of Medicine (M.D.)

Dr. Dilys Bart , MD

Ophthalmology

NPI 1598843963

Doctor of Medicine (M.D.)

Dr. Secily Bason-Mitchell , MD

Obstetrics & Gynecology - Obstetrics

NPI 1992872089

Doctor of Medicine (M.D.)

Dr. John Belzer , MD

Orthopaedic Surgery - Sports Medicine

NPI 1417043993

Doctor of Medicine (M.D.)

Chelsea Callander , PA

Physician Assistant

NPI 1528557741

Physician Assistant

Dr. Peter Callander , MD

Orthopaedic Surgery

NPI 1144316688

Doctor of Medicine (M.D.)

Career & Practice History

NPI enumerated December 19, 2006.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1548323694
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: December 19, 2006
Last Update: May 22, 2009
Sole Proprietor: No

Other Surgery Specialists in San Francisco

All Surgery Specialists in San Francisco

Mailing Address

3838 California St, Suite 612

San Francisco, CA 94118

Phone: 4152210736

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.