MS. GWENERVERE LOUISE FLAGG M.D.
NPI 1548216674
General Practice in Los Angeles, CA

NPI Status: Active since May 26, 2006

Contact Information

231 W VERNON AVE
SUITE 204
LOS ANGELES, CA
ZIP 90037
Phone: (323) 234-9595
Fax: (323) 234-9588

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  • Individual
  • Female
  • General Practice
  • PECOS Enrolled

About GWENERVERE FLAGG

This page provides the complete NPI Profile along with additional information for Gwenervere Flagg, a primary care provider established in Los Angeles, California with a medical specialization in General Practice. The healthcare provider is registered in the NPI registry with number 1548216674 assigned on May 2006. The practitioner's primary taxonomy code is 208D00000X with license number G42472 (CA). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1548216674
Provider Name
MS. GWENERVERE LOUISE FLAGG M.D.
Other Name
MS. GWEN FLAGG M.D.
Other Name Type
Other Name (5)
Gender
Female
Entity Type
Individual
Location Address
231 W VERNON AVE SUITE 204 LOS ANGELES, CA 90037
Location Phone
(323) 234-9595
Location Fax
(323) 234-9588
Mailing Address
PO BOX 91177 LOS ANGELES, CA 90009
Mailing Phone
(323) 234-9595
Mailing Fax
(323) 234-9588
Is Sole Proprietor?
Yes
Enumeration Date
05-26-2006
Last Update Date
09-11-2025
Code Navigator

A primary care provider (PCP) like Gwenervere Flagg sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, 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

General Practice

Taxonomy Code
208D00000X
Type
Allopathic & Osteopathic Physicians
License No.
G42472
License State
CA
Taxonomy Description
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee

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)
1204F00000XAllopathic & Osteopathic Physicians

Transplant Surgery

G42472 (CA)
2208600000XAllopathic & Osteopathic Physicians

Surgery

G42472 (CA)

Insurance Plans Accepted

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

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

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
00G424720MEDICAID (05)CA 

Medicare Participation & PECOS Enrollment Status

Gwenervere Flagg is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1548216674, we treat the final digit (4) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
5
Unchanged
Pos 3
4
Doubled → 8
Pos 4
8
Unchanged
Pos 5
2
Doubled → 4
Pos 6
1
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
6
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
4
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 4 → 8 2 → 4 6 → 12 → 3 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 5 + 8 + 8 + 4 + 1 + 1 + 2 + 6 + 1 + 4 + 24 = 66

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1548216674.

Other Providers at the Same Location


The following 13 providers are registered at the same or a nearby location.

Podiatrist
231 W VERNON AVE
LOS ANGELES, CA 90037
Dentist (General Practice)
231 W VERNON AVE, SUITE 107
LOS ANGELES, CA 90037
Family Medicine
231 W VERNON AVE, 101
LOS ANGELES, CA 90037
Internal Medicine (Cardiovascular Disease)
231 W VERNON AVE, SUITE 105
LOS ANGELES, CA 90037
General Practice
231 W VERNON AVE, 204
LOS ANGELES, CA 90037
General Practice
231 W VERNON AVE, 204
LOS ANGELES, CA 90037
Internal Medicine (Cardiovascular Disease)
231 W VERNON AVE, SUITE 105
LOS ANGELES, CA 90037
Radiologic Technologist
231 W VERNON AVE, SUITE 111
LOS ANGELES, CA 90037
Internal Medicine
231 W VERNON AVE, STE 204
LOS ANGELES, CA 90037
Social Worker (Clinical)
231 W VERNON AVE
LOS ANGELES, CA 90037
Ophthalmology
231 W VERNON AVE, STE 104
LOS ANGELES, CA 90037
Durable Medical Equipment & Medical Supplies
231 W VERNON AVE, # 103
LOS ANGELES, CA 90037
Physician Assistant
231 W VERNON AVE
LOS ANGELES, CA 90037

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1548216674, enumerated as an "individual" on May 26, 2006.

The provider is located at 231 W VERNON AVE SUITE 204 LOS ANGELES, CA 90037 and the phone number is (323) 234-9595.

General Practice with taxonomy code 208D00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.