NPPES file of Aug 9, 2026

Caryn Kendra Slack, M.D.

Family Medicine Physician · Bridgeport, CA

Caryn Kendra Slack, M.D. is a family medicine physician with a practice address in Bridgeport, California, and NPI 1689619124, issued on Jun 18, 2006. Check the license (California C152597, 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
1689619124
Name
Caryn Kendra Slack
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
C152597 CA
Self-reported in NPPES; status is on the state search
Practice location
199 Twin Lakes RD, Bridgeport, CA 93517
Phone
(530) 495-2100
Enumerated
Jun 18, 2006
Record last updated
Nov 25, 2025
Fax
(530) 495-2100
Medicaid ID
THP11576F CA
Medicare enrollment
Enrolled (PECOS I20040804001509); accepts Medicare assignment
Medical or professional school
University Of Minnesota Medical School, 2000
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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Verify Caryn Kendra Slack in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C152597
    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

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73% fewer Medicare Part D claims than the average family medicine physician in 2024

959 Medicare Part D claims for 151 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Caryn Slack959
  2. Specialty average3,544

Most prescribed

  1. Amlodipine Besylate57 claims
  2. Atorvastatin Calcium48 claims
  3. Albuterol Sulfate Hfa39 claims
  4. Metformin Hcl32 claims
  5. Quetiapine Fumarate31 claims
  6. Losartan Potassium30 claims

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. Toiyabe Indian Health Project IncLone Pine, CA

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

Caryn Kendra Slack among 17,133 family medicine physician records in California

Caryn Kendra Slack, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2000 · median 2005 among the 10,652 with a school on file
  • Record last updated2025 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

3 family medicine physician records list a practice address in Bridgeport

They are 3 of the 16 NPPES records with a practice address in Bridgeport, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Catherine Thomas, MDBridgeport, CA 935171881289379
  2. David Hohag, MDBishop, CA 935151902018609
  3. Thomas Boo, MDBishop, CA 935141255664124
  4. Stacey Brown, MDBishop, CA 935141629004650
  5. Henry Duke, M.D.Bishop, CA 935141770523052
  6. Anne Gasior, MDBishop, CA 935141821158312
  7. Adam Jesionek, MDBishop, CA 935141689104911
  8. Catherine Leja, MD PHDBishop, CA 935141588673446

Common questions

What is Caryn Kendra Slack, M.D.'s NPI number?

Caryn Kendra Slack, M.D.'s National Provider Identifier (NPI) is 1689619124, issued on Jun 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Caryn Kendra Slack, M.D. located?

The NPPES record lists a practice address at 199 Twin Lakes RD, Bridgeport, CA, 93517. Phone: (530) 495-2100. Providers update this record themselves, so call before visiting.

How can I verify Caryn Kendra Slack, M.D.'s license?

NPPES lists California license number C152597, 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 Caryn Kendra Slack, M.D. prescribe under Medicare Part D?

In 2024, Caryn Kendra Slack, M.D. had 959 Medicare Part D claims for 151 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.