Ajit Singh Ahluwalia, MD, MHA
Hospitalist Physician · Mission Viejo, CA
Ajit Singh Ahluwalia, MD, MHA is a hospitalist physician with a practice address in Mission Viejo, California, and NPI 1548465156, issued on Jun 15, 2007. Check the license (California C55707, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ajit Singh Ahluwalia
- Credential
- MD, MHA
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- C55707 CA
MD434121 PA
0101241733 VA
Self-reported in NPPES; status is on the state search - Practice location
- 26800 Crown Valley Pkwy Ste 315, Mission Viejo, CA 92691
- Phone
- (949) 364-6000
- Enumerated
- Jun 15, 2007
- Record last updated
- Oct 14, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (949) 364-1204
- Medicaid ID
- 102155543 PA
- Medicare enrollment
- Enrolled (PECOS I20130705000430); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 26800 Crown Valley Pkwy Ste 315
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ajit Singh Ahluwalia in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C55707Check 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 hospitalist physician in 2024
237 Medicare Part D claims for 111 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 40 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass17 claims
- Hydrocodone-Acetaminophen11 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: $332.14
11 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 7,324 providers of this specialty with any payment received $494.84 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
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ajit Singh Ahluwalia among 3,099 hospitalist physician records in California
Ajit Singh Ahluwalia, MD, MHA is one of 3,099 hospitalist 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 2007, is newer than 27% of them.
- NPI issued2007 · 27% of these records are older, 66% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2001 · median 2010 among the 2,505 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Mission Viejo → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Reza Dehkordi, MDMission Viejo, CA 926911679540116
- Keith Hsu, MDMission Viejo, CA 926911891921458
- Kevin Le, MDMission Viejo, CA 926911356594675
- Michael Monge, M.D.Mission Viejo, CA 926911457513178
- Sina Neshatian, M.D.Mission Viejo, CA 926911750510913
- Loan Nguyen, MDMission Viejo, CA 926911346477858
- Shohreh Sameni, M.D.Mission Viejo, CA 926911386999050
- Muhammad Shakeel, M.D.Mission Viejo, CA 926911851581003
Common questions
What is Ajit Singh Ahluwalia, MD, MHA's NPI number?
Ajit Singh Ahluwalia, MD, MHA's National Provider Identifier (NPI) is 1548465156, issued on Jun 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ajit Singh Ahluwalia, MD, MHA located?
The NPPES record lists a practice address at 26800 Crown Valley Pkwy Ste 315, Mission Viejo, CA, 92691. Phone: (949) 364-6000. Providers update this record themselves, so call before visiting.
How can I verify Ajit Singh Ahluwalia, MD, MHA's license?
NPPES lists California license number C55707, 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 Ajit Singh Ahluwalia, MD, MHA prescribe under Medicare Part D?
In 2024, Ajit Singh Ahluwalia, MD, MHA had 237 Medicare Part D claims for 111 beneficiaries; the average among hospitalist physician prescribers was 521. 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.