NPPES file of Aug 9, 2026

Emily Hortenstine McDowell, PA-C

Physician Assistant · San Marino, CA

Emily Hortenstine McDowell, PA-C is a physician assistant with a practice address in San Marino, California, and NPI 1659704286, issued on Aug 19, 2013. Check the license (California PA23046, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1659704286
Name
Emily Hortenstine McDowell
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
PA23046 CA
Self-reported in NPPES; status is on the state search
Practice location
375 Huntington Dr, San Marino, CA 91108
Phone
(678) 617-4601
Enumerated
Aug 19, 2013
Record last updated
Feb 4, 2014 (not updated in 12 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20170517001106); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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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Also registered at 375 Huntington Dr

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

  1. Lorna Blanco, M.D.Specialist1093787178
  2. Sonya Chen-Hsieh, MDFamily Medicine Physician1528017894
  3. Mu-Chien Chiang, D.O.Internal Medicine Physician1831322148
  4. Louis Countryman, M.D.Specialist1184612327
  5. Chien Fang, MDInternal Medicine Physician1922071398
  6. Jeffrey Huang, D.O.Ophthalmology Physician1124274998

Verify Emily Hortenstine McDowell 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 PA23046
    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

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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44% fewer Medicare Part D claims than the average physician assistant in 2024

463 Medicare Part D claims for 145 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.

  1. Emily McDowell463
  2. Specialty average830

Most prescribed

  1. Tamsulosin Hcl173 claims
  2. Finasteride106 claims
  3. Sulfamethoxazole-Trimethoprim20 claims
  4. Tolterodine Tartrate Er18 claims
  5. Doxazosin Mesylate17 claims
  6. Alfuzosin Hcl Er16 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): 92.3 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.

  1. Qualityout of 100 · 30% of the final score73.8
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. The Emory Clinic IncAtlanta, GA

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

Emily Hortenstine McDowell among 14,451 physician assistant records in California

Emily Hortenstine McDowell, 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 2013, is newer than 35% of them.

  • NPI issued2013 · 35% of these records are older, 62% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2013 · median 2018 among the 7,214 with a school on file
  • Record last updated2014 · 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).

6 physician assistant records list a practice address in San Marino

They are 6 of the 184 NPPES records with a practice address in San Marino, and 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Catherine Barth, PA-CSan Marino, CA 911081184283178
  2. Cassie ChanSan Marino, CA 911081427622919
  3. Cassidy JungSan Marino, CA 911081639859044
  4. Alastair NaghiehSan Marino, CA 911081235712241
  5. Judy Tung, MHS, PA-CSan Marino, CA 911081669936894
  6. Emin Aleksani, PA-CPasadena, CA 911071982131660
  7. Julia BermanPasadena, CA 911071780202473
  8. Erika Galang, PAPasadena, CA 911071356811343

Common questions

What is Emily Hortenstine McDowell, PA-C's NPI number?

Emily Hortenstine McDowell, PA-C's National Provider Identifier (NPI) is 1659704286, issued on Aug 19, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Emily Hortenstine McDowell, PA-C located?

The NPPES record lists a practice address at 375 Huntington Dr, San Marino, CA, 91108. Phone: (678) 617-4601. Providers update this record themselves, so call before visiting.

How can I verify Emily Hortenstine McDowell, PA-C's license?

NPPES lists California license number PA23046, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Emily Hortenstine McDowell, PA-C prescribe under Medicare Part D?

In 2024, Emily Hortenstine McDowell, PA-C had 463 Medicare Part D claims for 145 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Emily Hortenstine McDowell, PA-C's MIPS final score?

The 2023 MIPS final score is 92.3 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.