NPPES file of Aug 9, 2026

Kathrin Rachel Sidell, M.D.

Pediatrics Physician · Santa Cruz, CA

Kathrin Rachel Sidell, M.D. is a pediatrics physician with a practice address in Santa Cruz, California, and NPI 1801977897, issued on Oct 18, 2006. Check the license (California A88239, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1801977897
Name
Kathrin Rachel Sidell
Credential
M.D.
Primary taxonomy
Pediatrics Physician 208000000X
License number
A88239 CA
Self-reported in NPPES; status is on the state search
Practice location
2025 Soquel Ave, Santa Cruz, CA 95062
Phone
(831) 458-5555
Enumerated
Oct 18, 2006
Record last updated
Jan 9, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(831) 458-5845
Medicare enrollment
Enrolled (PECOS I20070330000357); accepts Medicare assignment
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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8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →

Also registered at 2025 Soquel Ave

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

  1. Farzana AbedFamily Nurse Practitioner1669932588
  2. Rachel Abrams, M.D.Family Medicine Physician1578542171
  3. Erin Agenjo Hohengarten, LCSWClinical Social Worker1376978791
  4. Bahar Aghighi, MDEndocrinology, Diabetes & Metabolism Physician1770562134
  5. Walter Alexander, M.D.Surgery Physician1386946606
  6. Timothy W Allari, MDInternal Medicine Physician1013996370

Verify Kathrin Rachel Sidell in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A88239    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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Bills Medicare through one group practice

  1. Sutter Bay Medical FoundationSanta Cruez, CA

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

Kathrin Rachel Sidell among 9,272 pediatrics physician records in California

Kathrin Rachel Sidell, M.D. is one of 9,272 pediatrics physician records with a practice address in California. 31% 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 4% of them.

  • NPI issued2006 · 4% of these records are older, 56% newer
  • In a Medicare fileYes · 31% of these records are
  • In the CMS Doctors and Clinicians fileYes · 8% of these records are
  • Graduated2003 · median 2012 among the 754 with a school on file
  • Record last updated2012 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatrics Physician providers in California

There are 9,272 pediatrics physician records in California.

All 9,272 in California → Every provider in Santa Cruz → Pediatrics Physician nationwide →

The 8 pediatrics physician records with the nearest ZIP codes

  1. Bruce Block, MDSanta Cruz, CA 950621841316213
  2. Rebecca Breton, MDSanta Cruz, CA 950621659367548
  3. Jacquelyn Busse, MDSanta Cruz, CA 950621598912842
  4. Garry Crummer, M.D.Santa Cruz, CA 950621699878579
  5. Jeanne Gallagher, MDSanta Cruz, CA 950621427038504
  6. Joseph Herbert, M.D.Santa Cruz, CA 950621245210137
  7. Howard Magarian, M.D.Santa Cruz, CA 950621427169796
  8. Nicole Marsico, M.D.Santa Cruz, CA 950621851589121

Common questions

What is Kathrin Rachel Sidell, M.D.'s NPI number?

Kathrin Rachel Sidell, M.D.'s National Provider Identifier (NPI) is 1801977897, issued on Oct 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Kathrin Rachel Sidell, M.D. located?

The NPPES record lists a practice address at 2025 Soquel Ave, Santa Cruz, CA, 95062. Phone: (831) 458-5555. Providers update this record themselves, so call before visiting.

How can I verify Kathrin Rachel Sidell, M.D.'s license?

NPPES lists California license number A88239, 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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.