NPPES file of Aug 9, 2026

Saiyun Hou, M.D., PH.D

Pain Medicine (Physical Medicine & Rehabilitation) Physician · San Diego, CA

Saiyun Hou, M.D., PH.D is a pain medicine (physical medicine & rehabilitation) physician with a practice address in San Diego, California, and NPI 1326464660, issued on Mar 11, 2014. Check the license (California A140529, as entered in NPPES) on the Medical Board of California; 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
1326464660
Name
Saiyun Hou
Credential
M.D., PH.D
Primary taxonomy
Pain Medicine (Physical Medicine & Rehabilitation) Physician 2081P2900X
License number
A140529 CA
Self-reported in NPPES; status is on the state search
Practice location
5395 Ruffin RD Ste 204, San Diego, CA 92123
Phone
(858) 571-3630
Enumerated
Mar 11, 2014
Record last updated
May 15, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(858) 430-3146
Medicare enrollment
Enrolled (PECOS I20190605000804); 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 5395 Ruffin RD Ste 204

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

  1. Louisa Adrienne Alejo, NPNurse Practitioner1184311987
  2. Zachary Cohen, M.D.Pain Medicine Physician1598021982
  3. Jessica Collinsworth, RNNurse Practitioner1467887828
  4. Alan Hurschman, M.D.Pain Medicine (Physical Medicine & Rehabilitation) Physician1326031980
  5. Mani Khaleghi, PAPhysician Assistant1275072423
  6. Insun Lee, M.D.Pain Medicine (Anesthesiology) Physician1447499199

Verify Saiyun Hou in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A140529
    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
Open the California license search

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83% more Medicare Part D claims than the average pain medicine (physical medicine & rehabilitation) physician in 2024

2,706 Medicare Part D claims for 169 beneficiaries, against an average of 1,479 among the 1,457 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 1,461 claims were for opioids.

  1. Saiyun Hou2,706
  2. Specialty average1,479

Most prescribed

  1. Hydrocodone-Acetaminophen601 claims
  2. Oxycodone Hcl232 claims
  3. Gabapentin215 claims
  4. Oxycodone-Acetaminophen214 claims
  5. Tramadol Hcl139 claims
  6. Pregabalin136 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.

Industry payments in 2024: $578.03

26 payments; by number, the most common kind was food and beverage; the largest payer was Collegium Pharmaceutical, Inc. The 1,126 providers of this specialty with any payment received $2,193.30 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Saiyun Hou$578.03
  2. Specialty average$2,193.30

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Michael Moon MD A Medical CorporationLa Jolla, CA

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

Pain Medicine (Physical Medicine & Rehabilitation) Physician providers in California

There are 290 pain medicine (physical medicine & rehabilitation) physician records in California.

Other pain medicine (physical medicine & rehabilitation) physician records in California

  1. Vibha Agrawal, MDPasadena, CA1528196045
  2. Mehras Akhavan, MDSherman Oaks, CA1497817332
  3. Dickran Altounian, D.O.Encino, CA1063862290
  4. Daniel Alves, MDPalmdale, CA1518018746
  5. Mary Ambach, M.D.Encinitas, CA1083769566
  6. Adam Amir, D.O.Palmdale, CA1407419922
  7. Bradford Anderson, M.D.Bakersfield, CA1891806832
  8. Armand Ardestani, DOPalmdale, CA1922636513
  9. Aaron Arel, D.O.La Mirada, CA1346773520
  10. Sean Ataee, M.D.Santa Ana, CA1144363011

Common questions

What is Saiyun Hou, M.D., PH.D's NPI number?

Saiyun Hou, M.D., PH.D's National Provider Identifier (NPI) is 1326464660, issued on Mar 11, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Saiyun Hou, M.D., PH.D located?

The NPPES record lists a practice address at 5395 Ruffin RD Ste 204, San Diego, CA, 92123. Phone: (858) 571-3630. Providers update this record themselves, so call before visiting.

How can I verify Saiyun Hou, M.D., PH.D's license?

NPPES lists California license number A140529, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Saiyun Hou, M.D., PH.D prescribe under Medicare Part D?

In 2024, Saiyun Hou, M.D., PH.D had 2,706 Medicare Part D claims for 169 beneficiaries; the average among pain medicine (physical medicine & rehabilitation) physician prescribers was 1,479. 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.