NPPES file of Aug 9, 2026

Kaitlyn Michelle Fruin

Internal Medicine Physician · Santa Monica, CA

Kaitlyn Michelle Fruin is an internal medicine physician with a practice address in Santa Monica, California, and NPI 1023646650, issued on Mar 30, 2020. Check the license (California A188059, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1023646650
Name
Kaitlyn Michelle Fruin
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A188059 CA
Self-reported in NPPES; status is on the state search
Practice location
1304 15TH St Ste 102, Santa Monica, CA 90404
Phone
(310) 825-7921
Enumerated
Mar 30, 2020
Record last updated
Jul 1, 2025
Medicare enrollment
Enrolled (PECOS I20250522002436); accepts Medicare assignment
Medical or professional school
Rush Medical College Of Rush University, 2020
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1304 15TH St Ste 102

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Charles Chandler, MDSurgery Physician1295842771
  2. David Chen, M.D.Surgery Physician1760630057
  3. Melissa Chung, MDObesity Medicine (Internal Medicine) Physician1285123265
  4. Courtney Decan, MDInternal Medicine Physician1659831212
  5. Brian Kadera, M.D.Surgical Oncology Physician1083849327
  6. Edward Livingston, MDSurgery Physician1114981990

Verify Kaitlyn Michelle Fruin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A188059
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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99% fewer Medicare Part D claims than the average internal medicine physician in 2024

33 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Kaitlyn Fruin33
  2. Specialty average3,176

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. The Regents OF The University OF CaliforniaThousand Oaks, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Kaitlyn Michelle Fruin among 17,696 internal medicine physician records in California

Kaitlyn Michelle Fruin is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 89% of them.

  • NPI issued2020 · 89% of these records are older, 8% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2020 · median 2004 among the 11,065 with a school on file
  • Record last updated2025 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

168 internal medicine physician records list a practice address in Santa Monica

They are 168 of the 5,151 NPPES records with a practice address in Santa Monica, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Robert Ashley, MDSanta Monica, CA 904041780628487
  2. Mitchell Becker, M.D.Santa Monica, CA 904041922033935
  3. Chiquita Flowers, M.D.Santa Monica, CA 904041972595700
  4. Glenn Gorlitsky, M.D.Santa Monica, CA 904041881625143
  5. Oscar Hernandez, M.D.Santa Monica, CA 904041699706952
  6. Mark McGowan, MDSanta Monica, CA 904041720015902
  7. Alex Messina, MDSanta Monica, CA 904041902867823
  8. Mark Nachman, MDSanta Monica, CA 904041104803683

Common questions

What is Kaitlyn Michelle Fruin's NPI number?

Kaitlyn Michelle Fruin's National Provider Identifier (NPI) is 1023646650, issued on Mar 30, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Kaitlyn Michelle Fruin located?

The NPPES record lists a practice address at 1304 15TH St Ste 102, Santa Monica, CA, 90404. Phone: (310) 825-7921. Providers update this record themselves, so call before visiting.

How can I verify Kaitlyn Michelle Fruin's license?

NPPES lists California license number A188059, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Kaitlyn Michelle Fruin prescribe under Medicare Part D?

In 2024, Kaitlyn Michelle Fruin had 33 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.