DR. CHARLES R. GHERMAN M.D.
NPI 1609818764
Internal Medicine in San Francisco, CA

NPI Status: Active since June 12, 2006

Contact Information

505 PARNASSUS AVE
SAN FRANCISCO, CA
ZIP 94143
Phone: (415) 353-2873
Fax: (415) 353-2528

Recently Updated NPI Information
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.

Table of Contents

NPI Profile Information
Primary Taxonomy
Secondary Taxonomies
Insurance Plans Accepted
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Internal Medicine

About CHARLES GHERMAN

This page provides the complete NPI Profile along with additional information for Charles Gherman, an internist established in San Francisco, California with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1609818764 assigned on June 2006. The practitioner's primary taxonomy code is 207R00000X with license number A19240 (CA). The provider is registered as an individual and his NPI record was last updated July 2025.

NPI: 1609818764
Provider Name: DR. CHARLES R. GHERMAN M.D.
Gender: Male
Entity Type: Individual
Location Address: 505 PARNASSUS AVE SAN FRANCISCO, CA 94143
Location Phone: (415) 353-2873
Location Fax: (415) 353-2528
Mailing Address: 1635 DIVISADERO STREET SUITE 625, BOX 1821 SAN FRANCISCO, CA 94143
Mailing Phone: (415) 476-4029
Mailing Fax: (415) 353-2528
Is Sole Proprietor?: Yes
Enumeration Date: 06-12-2006
Last Update Date: 07-20-2025
Code Navigator

An internist like Charles Gherman is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification: Internal Medicine
Taxonomy Code: 207R00000X
Type: Allopathic & Osteopathic Physicians
License No.: A19240
License State: CA
Taxonomy Description: 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.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No.	Taxonomy Code	Type	Classification / Specialization	License No. (State)

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Medicare

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Medicaid

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier	Type / Code	Identifier State	Identifier Issuer
00A192400	MEDICAID (05)	CA

NPI Validation Check Digit Calculation

The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1	6	0	9	8	1	8	7	6	4
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2	6	0	9	16	1	16	7	12
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 6 + 0 + 9 + 1 + 6 + 1 + 1 + 6 + 7 + 1 + 2 + 24 = 66
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
70 - 66 = 4									4

The NPI number 1609818764 is valid because the calculated check digit 4 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location

The following 20 providers are registered at the same or nearby location.

DR. JANE O KIM PHARM.D.

Pharmacist

505 PARNASSUS AVE
SAN FRANCISCO, CA
ZIP 94143

About CHARLES GHERMAN

Location Map

Specialty - Primary Taxonomy

Internal Medicine

Secondary Taxonomies

Insurance Plans Accepted

Medicare

Medicaid

Additional Identifiers

Reviews for DR. CHARLES R. GHERMAN M.D.

NPI Validation Check Digit Calculation

Other Providers at the Same Location

Frequently Asked Questions

What is Charles Gherman's NPI number?

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What insurance does Charles Gherman accept?