Nathaniel Stanley Fung, M.D.
Surgical Critical Care Physician · Moreno Valley, CA
Nathaniel Stanley Fung, M.D. is a surgical critical care physician with a practice address in Moreno Valley, California, and NPI 1245686195, issued on May 10, 2016. Check the license (California A179922, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nathaniel Stanley Fung
- Credential
- M.D.
- Primary taxonomy
- Surgical Critical Care Physician 2086S0102X
- License number
- A179922 CA
Self-reported in NPPES; status is on the state search - Practice location
- 26520 Cactus Ave, Moreno Valley, CA 92555
- Phone
- (951) 486-5177
- Enumerated
- May 10, 2016
- Record last updated
- Jan 27, 2023
- Medicare enrollment
- Enrolled (PECOS I20221010002219); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgical critical care physician records → All 160 in California → Look up another NPI →
Also registered at 26520 Cactus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Barbara Ackerman, PH.D.Clinical Psychologist1639126410
- Sana Afroz, MDRheumatology Physician1356724074
- Georgina Aguilar-Portillo, MDFamily Medicine Physician1144804691
- Adolfo Aguilera, MDFamily Medicine Physician1477609808
Verify Nathaniel Stanley Fung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A179922Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average surgical critical care physician in 2024
33 Medicare Part D claims for 12 beneficiaries, against an average of 64 among the 606 providers of this specialty who prescribed in Part D.
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 practice group's MIPS final score for 2023 (Medicare payment program): 85.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $49.87
1 payment: food and beverage; the largest payer was Aroa Biosurgery Incorporated. The 1,092 providers of this specialty with any payment received $2,183.62 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 one group practice
- Faculty Physicians And Surgeons OF LlusmLoma Linda, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathaniel Stanley Fung among 160 surgical critical care physician records in California
Nathaniel Stanley Fung, M.D. is one of 160 surgical critical care physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 79% of them.
- NPI issued2016 · 79% of these records are older, 12% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2016 · median 2009 among the 127 with a school on file
- Record last updated2023 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Critical Care Physician providers in California
There are 160 surgical critical care physician records in California.
All 160 in California → Every provider in Moreno Valley → Surgical Critical Care Physician nationwide →
The 8 surgical critical care physician records with the nearest ZIP codes
- Paul Albini, M.D.Moreno Valley, CA 925551053643536
- Stephanie Downing, MDMoreno Valley, CA 925551174834055
- Anastasia Kunac, M.D.Moreno Valley, CA 925551184948861
- Linda Yala, M.D.Moreno Valley, CA 925551568824845
- Tae Young Lee, M.D.Riverside, CA 925051740437375
- David Plurad, M.D.Riverside, CA 925051750425278
- Lonnie Frei, M.D.San Bernardino, CA 924041114976099
- Kristine BonnickLoma Linda, CA 923541831622927
Common questions
What is Nathaniel Stanley Fung, M.D.'s NPI number?
Nathaniel Stanley Fung, M.D.'s National Provider Identifier (NPI) is 1245686195, issued on May 10, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Nathaniel Stanley Fung, M.D. located?
The NPPES record lists a practice address at 26520 Cactus Ave, Moreno Valley, CA, 92555. Phone: (951) 486-5177. Providers update this record themselves, so call before visiting.
How can I verify Nathaniel Stanley Fung, M.D.'s license?
NPPES lists California license number A179922, 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 Nathaniel Stanley Fung, M.D. prescribe under Medicare Part D?
In 2024, Nathaniel Stanley Fung, M.D. had 33 Medicare Part D claims for 12 beneficiaries; the average among surgical critical care physician prescribers was 64. Part D covers Medicare prescriptions only.
What is Nathaniel Stanley Fung, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.2 of 100, reported for the practice group. 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.