Stephanie Loomis, PA-C
Physician Assistant · Palo Alto, CA
Stephanie Loomis, PA-C is a physician assistant with a practice address in Palo Alto, California, and NPI 1225660186, issued on Feb 9, 2020. Check the license (California PA58689, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stephanie Loomis
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA58689 CA
Self-reported in NPPES; status is on the state search - Practice location
- 795 EL Camino Real, Palo Alto, CA 94301
- Phone
- (650) 853-2977
- Enumerated
- Feb 9, 2020
- Record last updated
- Oct 23, 2023
- Medicare enrollment
- Enrolled (PECOS I20201119000505); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 795 EL Camino Real
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Verify Stephanie Loomis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA58689Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average physician assistant in 2024
235 Medicare Part D claims for 143 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin13 claims
- Cephalexin11 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.
The MIPS final score for 2023 (Medicare payment program): 84.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Sutter Bay Medical FoundationLos Altos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephanie Loomis among 14,451 physician assistant records in California
Stephanie Loomis, PA-C 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 2020, is newer than 62% of them.
- NPI issued2020 · 62% of these records are older, 33% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2020 · median 2018 among the 7,214 with a school on file
- Record last updated2023 · 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).
155 physician assistant records list a practice address in Palo Alto
They are 155 of the 7,617 NPPES records with a practice address in Palo Alto, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Palo Alto → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Sean Cutright, P.A.Palo Alto, CA 943011063581239
- Kathleen Erickson, PAPalo Alto, CA 943011063567295
- Sandra Ewers, PAPalo Alto, CA 943011104915370
- Kelly Heath, P.A-CPalo Alto, CA 943011174553168
- Zan Huang, PAPalo Alto, CA 943011831330240
- Douglas Jacobs, PAPalo Alto, CA 943011972639839
- Steven Johnson, P.A.Palo Alto, CA 943011063584126
- Danny Kay, P.A.-CPalo Alto, CA 943011568613339
Common questions
What is Stephanie Loomis, PA-C's NPI number?
Stephanie Loomis, PA-C's National Provider Identifier (NPI) is 1225660186, issued on Feb 9, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Stephanie Loomis, PA-C located?
The NPPES record lists a practice address at 795 EL Camino Real, Palo Alto, CA, 94301. Phone: (650) 853-2977. Providers update this record themselves, so call before visiting.
How can I verify Stephanie Loomis, PA-C's license?
NPPES lists California license number PA58689, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Stephanie Loomis, PA-C prescribe under Medicare Part D?
In 2024, Stephanie Loomis, PA-C had 235 Medicare Part D claims for 143 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Stephanie Loomis, PA-C's MIPS final score?
The 2023 MIPS final score is 84.9 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.