Susan M. Sleep, MD
Internal Medicine Physician · Los Alamitos, CA
Susan M. Sleep, MD is an internal medicine physician with a practice address in Los Alamitos, California, and NPI 1750458816, issued on Nov 30, 2006. Check the license (California G66731, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Susan M. Sleep
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- G66731 CA
G066731 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3742 Katella Ave, Los Alamitos, CA 90720
- Phone
- (562) 936-0292
- Enumerated
- Nov 30, 2006
- Record last updated
- Nov 16, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (562) 936-1943
- Medicare enrollment
- Enrolled (PECOS I20070327000302); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 3742 Katella Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Susan M. Sleep in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G66731Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% more Medicare Part D claims than the average internal medicine physician in 2024
3,825 Medicare Part D claims for 373 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 67 claims were for opioids.
Most prescribed
- Levothyroxine Sodium253 claims
- Rosuvastatin Calcium250 claims
- Escitalopram Oxalate160 claims
- Atorvastatin Calcium152 claims
- Gabapentin90 claims
- Amlodipine Besylate83 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): 0 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).
Industry payments in 2024: $156.68
6 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through 2 group practices
- Leur Medicine IncNewport Beach, CA
- Sarah Sandell MD Facp And Susan Sleep MD AmcLos Alamitos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Susan M. Sleep among 17,696 internal medicine physician records in California
Susan M. Sleep, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% 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, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1988 · median 2004 among the 11,065 with a school on file
- Record last updated2020 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
40 internal medicine physician records list a practice address in Los Alamitos
They are 40 of the 1,035 NPPES records with a practice address in Los Alamitos, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Alamitos → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Barry Allswang, MDLos Alamitos, CA 907201720016397
- Carlos ArguedasLos Alamitos, CA 907201023075579
- Vichai Bhoopat, M.D.Los Alamitos, CA 907201841211497
- Winston Chung, MDLos Alamitos, CA 907201851322085
- Gerald Cohen, MDLos Alamitos, CA 907201306877253
- Heena Contractor, M.D.Los Alamitos, CA 907201518954973
- William Harrell, MDLos Alamitos, CA 907201083673685
- Taolin Jen, M.D.Rossmoor, CA 907201457384828
Common questions
What is Susan M. Sleep, MD's NPI number?
Susan M. Sleep, MD's National Provider Identifier (NPI) is 1750458816, issued on Nov 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Susan M. Sleep, MD located?
The NPPES record lists a practice address at 3742 Katella Ave, Los Alamitos, CA, 90720. Phone: (562) 936-0292. Providers update this record themselves, so call before visiting.
How can I verify Susan M. Sleep, MD's license?
NPPES lists California license number G66731, 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 Susan M. Sleep, MD prescribe under Medicare Part D?
In 2024, Susan M. Sleep, MD had 3,825 Medicare Part D claims for 373 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Susan M. Sleep, MD's MIPS final score?
The 2023 MIPS final score is 0 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.