Crystal J. Cox, PA
Physician Assistant · Santa Rosa, CA
Crystal J. Cox, PA is a physician assistant with a practice address in Santa Rosa, California, and NPI 1811195100, issued on Jul 7, 2007. Check the license (California 12696, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Crystal J. Cox
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 12696 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3883 Airway Dr Ste 120, Santa Rosa, CA 95403
- Phone
- (707) 521-4495
- Enumerated
- Jul 7, 2007
- Record last updated
- Aug 5, 2022
- Fax
- (707) 573-5421
- Medicare enrollment
- Enrolled (PECOS I20160202002463); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 3883 Airway Dr Ste 120
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Shawn Franklin, MDEmergency Medicine Physician1669422507
- Andrea Ibbison, CRNANurse Practitioner1932393584
- Frederick Kronen, MDEmergency Medicine Physician1093758617
- Patrick McAlpinNurse Practitioner1265262752
Verify Crystal J. Cox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 12696Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average physician assistant in 2024
357 Medicare Part D claims for 266 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Cephalexin44 claims
- Amoxicillin-Clavulanate Potass40 claims
- Albuterol Sulfate Hfa39 claims
- Azithromycin35 claims
- Sulfamethoxazole-Trimethoprim31 claims
- Mupirocin22 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.
Crystal J. Cox among 14,451 physician assistant records in California
Crystal J. Cox, PA is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 13% of them.
- NPI issued2007 · 13% of these records are older, 78% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1990 · median 2018 among the 7,214 with a school on file
- Record last updated2022 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physician Assistant providers in California
There are 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Santa Rosa → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Angela Abboud, MMS, PA-CSanta Rosa, CA 954031114399334
- Cecilia Alvarez Barajas, PASanta Rosa, CA 954031942844055
- Wayne Anderson, ND, PASanta Rosa, CA 954031124251848
- Jennifer BleckSanta Rosa, CA 954031326683350
- Ann Bruner-Welch, PA-CSanta Rosa, CA 954031235203274
- Christian Campanile, PA-CSanta Rosa, CA 954031790831253
- Michelle Campos, PA-CSanta Rosa, CA 954031740538891
- Robert CrenshawSanta Rosa, CA 954031770672925
Common questions
What is Crystal J. Cox, PA's NPI number?
Crystal J. Cox, PA's National Provider Identifier (NPI) is 1811195100, issued on Jul 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Crystal J. Cox, PA located?
The NPPES record lists a practice address at 3883 Airway Dr Ste 120, Santa Rosa, CA, 95403. Phone: (707) 521-4495. Providers update this record themselves, so call before visiting.
How can I verify Crystal J. Cox, PA's license?
NPPES lists California license number 12696, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Crystal J. Cox, PA prescribe under Medicare Part D?
In 2024, Crystal J. Cox, PA had 357 Medicare Part D claims for 266 beneficiaries; the average among physician assistant prescribers was 830. 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.