Emily Treadwell Frey, PA
Physician Assistant · Ukiah, CA
Emily Treadwell Frey, PA is a physician assistant with a practice address in Ukiah, California, and NPI 1801842901, issued on May 26, 2006. Check the license (California PA13741, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Emily Treadwell Frey
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA13741 CA
Self-reported in NPPES; status is on the state search - Practice location
- 275 Hospital Dr, Ukiah, CA 95482
- Phone
- (707) 462-7900
- Enumerated
- May 26, 2006
- Record last updated
- Mar 25, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (707) 462-7947
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 275 Hospital Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Fadi Arodaki, DOHospitalist Physician1720499023
- Erin Bainbridge, N.P.Family Nurse Practitioner1104368729
- Rachel Barber, F.N.P.Nurse Practitioner1518248970
- Lillian Basner, FNPNurse Practitioner1750321972
- Donald Bond, PHARMD, RPHPharmacist1679946446
- Alejandro Casillas, M.D.Emergency Medicine Physician1376707919
Verify Emily Treadwell Frey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA13741Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average physician assistant in 2024
158 Medicare Part D claims for 17 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 94 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen38 claims
- Buprenorphine23 claims
- Belbuca11 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.
Emily Treadwell Frey among 14,451 physician assistant records in California
Emily Treadwell Frey, 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 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 87% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2008 · 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).
15 physician assistant records list a practice address in Ukiah
They are 15 of the 1,439 NPPES records with a practice address in Ukiah, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Ukiah → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Larry Aguirre, PA-C, DMSC, CAQ-PSYUkiah, CA 954821093076416
- Stephanie BullUkiah, CA 954821477293850
- Kaylee Doughty, PAUkiah, CA 954821417622143
- Vincent DuongUkiah, CA 954821396458469
- Diana Garcia, PA-CUkiah, CA 954821447668918
- Glenn Gifford, PA-CUkiah, CA 954821205011475
- Nicole Kimball, PA-C, CAQ-OBGYNUkiah, CA 954821083257786
- Nancy Laybourn, P.A.Ukiah, CA 954821669687182
Common questions
What is Emily Treadwell Frey, PA's NPI number?
Emily Treadwell Frey, PA's National Provider Identifier (NPI) is 1801842901, issued on May 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Emily Treadwell Frey, PA located?
The NPPES record lists a practice address at 275 Hospital Dr, Ukiah, CA, 95482. Phone: (707) 462-7900. Providers update this record themselves, so call before visiting.
How can I verify Emily Treadwell Frey, PA's license?
NPPES lists California license number PA13741, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Emily Treadwell Frey, PA prescribe under Medicare Part D?
In 2024, Emily Treadwell Frey, PA had 158 Medicare Part D claims for 17 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.