NPPES file of Aug 9, 2026

Rachel Lynn Segerdahl, M.S., PA-C

Medical Physician Assistant · San Francisco, CA

Rachel Lynn Segerdahl, M.S., PA-C is a medical physician assistant with a practice address in San Francisco, California, and NPI 1689953887, issued on Aug 5, 2011. Check the license (California 53662, as entered in NPPES) with the California board that licenses this profession; 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
1689953887
Name
Rachel Lynn Segerdahl
Credential
M.S., PA-C
Primary taxonomy
Medical Physician Assistant 363AM0700X
License numbers
53662 CA
3246 CO
Self-reported in NPPES; status is on the state search
Practice location
2 Embarcadero Ctr Lbby Level, San Francisco, CA 94111
Phone
(415) 578-3100
Enumerated
Aug 5, 2011
Record last updated
Mar 14, 2025
Fax
(415) 252-7176
Medicaid ID
79485065 CO
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2 Embarcadero Ctr Lbby Level

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

  1. Susan AdamNurse Practitioner1033530811
  2. Julie Ahlrich, FNP-BCFamily Nurse Practitioner1780802629
  3. Ann Ala, NPFamily Nurse Practitioner1083948012
  4. Jennifer Alexander, FNPFamily Nurse Practitioner1205179249
  5. Sameerah Ali, FNP-BCNurse Practitioner1558531566
  6. Amanda Anderson, P.A.Physician Assistant1104292267

Verify Rachel Lynn Segerdahl in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 53662
    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
Find the California license search

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68% fewer Medicare Part D claims than the average medical physician assistant in 2024

369 Medicare Part D claims for 175 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.

  1. Rachel Segerdahl369
  2. Specialty average1,148

Most prescribed

  1. Atorvastatin Calcium39 claims
  2. Amlodipine Besylate15 claims
  3. Levothyroxine Sodium12 claims
  4. Praluent Pen12 claims
  5. Losartan Potassium11 claims
  6. Omeprazole11 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.

Rachel Lynn Segerdahl among 3,376 medical physician assistant records in California

Rachel Lynn Segerdahl, M.S., PA-C is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 46% of them.

  • NPI issued2011 · 46% of these records are older, 49% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileNo · 40% of these records are
  • Record last updated2025 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Physician Assistant providers in California

There are 3,376 medical physician assistant records in California.

The 8 medical physician assistant records with the nearest ZIP codes

  1. Sarah Kaplan, PA-CSan Francisco, CA 941111982796553
  2. Karen Katon, PA-CSan Francisco, CA 941111891385274
  3. Alexis Kofoed, PA-CSan Francisco, CA 941111770078479
  4. Melissa Nastacio, PA-CSan Francisco, CA 941111982113007
  5. Dana Osipower, PA-CSan Francisco, CA 941111659351625
  6. Robert Ostrowski, PA-CSan Francisco, CA 941111417112103
  7. Arju Patel, PA-CSan Francisco, CA 941111790013472
  8. Angelica Rumley, PA-CSan Francisco, CA 941111801234281

Common questions

What is Rachel Lynn Segerdahl, M.S., PA-C's NPI number?

Rachel Lynn Segerdahl, M.S., PA-C's National Provider Identifier (NPI) is 1689953887, issued on Aug 5, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Rachel Lynn Segerdahl, M.S., PA-C located?

The NPPES record lists a practice address at 2 Embarcadero Ctr Lbby Level, San Francisco, CA, 94111. Phone: (415) 578-3100. Providers update this record themselves, so call before visiting.

How can I verify Rachel Lynn Segerdahl, M.S., PA-C's license?

NPPES lists California license number 53662, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Rachel Lynn Segerdahl, M.S., PA-C prescribe under Medicare Part D?

In 2024, Rachel Lynn Segerdahl, M.S., PA-C had 369 Medicare Part D claims for 175 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.