Allison Aka, MD
Colon & Rectal Surgery Physician · Loma Linda, CA
Allison Aka, MD is a colon & rectal surgery physician with a practice address in Loma Linda, California, and NPI 1891130100, issued on May 1, 2013. Check the license (California A168804, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allison Aka
- Credential
- MD
- Primary taxonomy
- Colon & Rectal Surgery Physician 208C00000X
- License number
- A168804 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11175 Campus Street, Loma Linda, CA 92350
- Phone
- (909) 651-5948
- Enumerated
- May 1, 2013
- Record last updated
- Jun 29, 2023
- Fax
- (909) 558-0236
- Medicare enrollment
- Enrolled (PECOS I20200923001308); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest colon & rectal surgery physician records → All 198 in California → Look up another NPI →
Also registered at 11175 Campus Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Allison Aka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A168804Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average colon & rectal surgery physician in 2024
87 Medicare Part D claims for 31 beneficiaries, against an average of 192 among the 1,836 providers of this specialty who prescribed in Part D.
Most prescribed
- Metronidazole20 claims
- Neomycin Sulfate20 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 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).
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).
Allison Aka among 198 colon & rectal surgery physician records in California
Allison Aka, MD is one of 198 colon & rectal surgery physician records with a practice address in California. 87% 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 79% of them.
- NPI issued2013 · 79% of these records are older, 15% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2013 · median 2002 among the 149 with a school on file
- Record last updated2023 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208C00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Colon & Rectal Surgery Physician providers in California
There are 198 colon & rectal surgery physician records in California.
All 198 in California → Every provider in Loma Linda → Colon & Rectal Surgery Physician nationwide →
The 8 colon & rectal surgery physician records with the nearest ZIP codes
- Justin Greco, MB BCH BAOLoma Linda, CA 923501376032888
- John Griffin, M.D.Loma Linda, CA 923541821014903
- David Row, M.D.Loma Linda, CA 923541871797118
- Ngoc Patrick Nguyen, MDFontana, CA 923351417153552
- Robert Yuhan, MDFontana, CA 923351144397969
- Matthew Whealon, MDColton, CA 923241902163710
- Scott Gering, MDRancho Mirage, CA 922701962495721
- Mohammed Iyoob Mohammed Ilyas, MDRancho Mirage, CA 922701902160195
Common questions
What is Allison Aka, MD's NPI number?
Allison Aka, MD's National Provider Identifier (NPI) is 1891130100, issued on May 1, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Allison Aka, MD located?
The NPPES record lists a practice address at 11175 Campus Street, Loma Linda, CA, 92350. Phone: (909) 651-5948. Providers update this record themselves, so call before visiting.
How can I verify Allison Aka, MD's license?
NPPES lists California license number A168804, 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 Allison Aka, MD prescribe under Medicare Part D?
In 2024, Allison Aka, MD had 87 Medicare Part D claims for 31 beneficiaries; the average among colon & rectal surgery physician prescribers was 192. Part D covers Medicare prescriptions only.
What is Allison Aka, MD'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.