Frederick Ock-Horn Lee, MD
Endocrinology, Diabetes & Metabolism Physician · Pasadena, CA
Frederick Ock-Horn Lee, MD is an endocrinology, diabetes & metabolism physician with a practice address in Pasadena, California, and NPI 1063508679, issued on Oct 4, 2006. Check the license (California G48792, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Frederick Ock-Horn Lee
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- G48792 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2750 East Washington BL, Pasadena, CA 91107
- Phone
- (626) 797-7470
- Enumerated
- Oct 4, 2006
- Record last updated
- Apr 24, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (626) 797-1758
- Medicare enrollment
- Enrolled (PECOS I20120525000258); accepts Medicare assignment
- Medical or professional school
- University Of Oklahoma College Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Verify Frederick Ock-Horn Lee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G48792Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
6,360 Medicare Part D claims for 533 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims. 37 claims were for opioids.
Most prescribed
- Atorvastatin Calcium557 claims
- Metformin Hcl425 claims
- Levothyroxine Sodium346 claims
- Jardiance295 claims
- Amlodipine Besylate226 claims
- Losartan Potassium207 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $945.83
38 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Frederick Ock-Horn Lee among 1,131 endocrinology, diabetes & metabolism physician records in California
Frederick Ock-Horn Lee, MD is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1981 · median 2003 among the 779 with a school on file
- Record last updated2013 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Pasadena → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Warren Lee, MD, MHSPasadena, CA 911071942696448
- Jennifer Chang, M.D.Pasadena, CA 911051568631091
- Maria Linares Valderrama, M.D.Pasadena, CA 911051659739324
- Gia Novell-Kimura, MDPasadena, CA 911051558317834
- Yang Shen, M.D.Pasadena, CA 911051609189075
- Albert Shieh, M.D.Pasadena, CA 911051750540647
- Mahtab Sohrevardi, MDPasadena, CA 911051578777033
- Cary Manoogian, MDPasadena, CA 911011306819271
Common questions
What is Frederick Ock-Horn Lee, MD's NPI number?
Frederick Ock-Horn Lee, MD's National Provider Identifier (NPI) is 1063508679, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frederick Ock-Horn Lee, MD located?
The NPPES record lists a practice address at 2750 East Washington BL, Pasadena, CA, 91107. Phone: (626) 797-7470. Providers update this record themselves, so call before visiting.
How can I verify Frederick Ock-Horn Lee, MD's license?
NPPES lists California license number G48792, 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 Frederick Ock-Horn Lee, MD prescribe under Medicare Part D?
In 2024, Frederick Ock-Horn Lee, MD had 6,360 Medicare Part D claims for 533 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Frederick Ock-Horn Lee, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.