Dr. Ajit Singh Mannan, MD
- Medicare services, 2024
- 752
- Medicare patients, 2024
- 233
- Part D claims, 2024
- 355
- Hospital affiliations
- 1
- Industry payments
- $4,315
- Practice address
- 3330 Lomita Blvd, Torrance, CA 90509
- Practice phone
- Call (310) 325-9110
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Mannan's professional email, personal email and mobile number
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Dr. Ajit Singh Mannan is an internist in Torrance, California
Dr. Mannan practices at Torrance Memorial Medical Center in Torrance, California, part of Cedars-Sinai Health System.
Dr. Mannan's NPI, 1659613719, was assigned on March 26, 2013. Dr. Mannan graduated from David Geffen School of Medicine at UCLA in 2013. Dr. Mannan holds California license A133177.
- NPI
- 1659613719NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5890097125
- NPI enumeration date
- March 26, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 325-9110
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ajit Singh Mannan practices at Torrance Memorial Medical Center in Torrance, California
Dr. Mannan's primary practice is Torrance Memorial Medical Center, at 3330 Lomita Blvd, Torrance, CA 90509 in Los Angeles County. The practice phone is (310) 325-9110.
- Torrance Memorial Medical Center3330 Lomita Blvd, Torrance, CA 90509 · Los Angeles CountyPhone(310) 325-9110
Source: Dmand AI Affiliation Data
Dr. Ajit Singh Mannan is affiliated with 1 site of care and 1 medical group
Dr. Mannan's primary practice is Torrance Memorial Medical Center in Torrance, California, part of Cedars-Sinai Health System. The medical group on file is Torrance Memorial Physician Network.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ajit Singh Mannan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mannan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Torrance Memorial Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ajit Singh Mannan is one of 16,751 internists in California
Internal medicine is Dr. Mannan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Mannan is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute respiratory failure, anemia, cardiac arrhythmia, congestive heart failure, electrolyte disorders, gastrointestinal bleeding, gastrointestinal inflammation and gastrointestinal obstruction among the conditions Dr. Mannan treats.
Internists near Dr. Mannan
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ajit Singh Mannan billed Medicare for 752 services in 2024
CMS data shows 752 Medicare services from Dr. Mannan across 6 procedure codes in 2024, for 233 Medicare patients. Medicare paid $72,444 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mannan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9062024: 75217%
Dr. Mannan compared with the California median for internists, 2024
- Dr. Mannan
- California median
- Medicare services
- 752vs 3612.1 times
- Medicare patients
- 233vs 15154% above
- Part D claims
- 153vs 42164% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Mannan's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Mannan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mannan and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ajit Singh Mannan treated 233 Medicare patients in 2024, average age 79
CMS counts 233 Medicare patients who saw Dr. Mannan in 2024. The largest group is 75 to 84, with 87 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 31% are also on Medicaid. Their average risk score is 2.41, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Mannan's median patient age at 66, with 53% women.
Dr. Mannan's Medicare patients by age, 2024
Dr. Mannan's Medicare patients by sex, 2024
- Women13357%
- Men10043%
Chronic conditions among Dr. Mannan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Chronic kidney disease52%
- Diabetes43%
- Heart failure43%
- Atrial fibrillation41%
- Ischemic heart disease39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mannan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ajit Singh Mannan wrote 355 Medicare Part D claims in 2024
In 2024, Dr. Mannan wrote 355 Medicare Part D claims for 154 patients. 87% of them were for generic drugs. CMS names the drug for 153 of them, across 9 drugs with 11 or more claims each, at $1,335 in total drug cost. In 2023, CMS named 105 claims across 7 drugs.
Dr. Mannan's Part D claims by kind of drug, 2024
- Generic310 claims87%
- Brand-name and other45 claims13%
Dr. Mannan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Mannan's Part D claims, 2024
- Opioids7%24 of 355 claims
- Antibiotics19%66 of 355 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1052024: 15346%
Drugs named by CMS: 9 in 2024, 7 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Ajit Singh Mannan takes part in Medicare
Dr. Mannan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ajit Singh Mannan received $4,315 in industry payments from 2017 to 2025
CMS Open Payments shows 231 general payments to Dr. Mannan from 21 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $809.
General payments to Dr. Mannan by program year, 2017 to 2025
Companies that paid Dr. Mannan the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ajit Singh Mannan graduated from David Geffen School of Medicine at UCLA
Dr. Mannan graduated from David Geffen School of Medicine at UCLA in 2013. Dr. Mannan is a member of ACP and SHM.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Ajit Singh Mannan accepts plans from 15 insurance carriers
Dr. Mannan is in network with 15 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Aetna
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +7 more carriersWith a free account
Plan types Dr. Mannan accepts, by number of carriers
- PPO10
- Medicare7
- HMO6
- POS5
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Ajit Singh Mannan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ajit Singh Mannan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ajit Singh Mannan's NPI number?
Dr. Ajit Singh Mannan's NPI number is 1659613719. It was assigned on March 26, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Ajit Singh Mannan?
Dr. Ajit Singh Mannan is an internist in Torrance, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ajit Singh Mannan practice?
Dr. Mannan practices at 3330 Lomita Blvd, Torrance, CA 90509. Dr. Mannan's primary practice is Torrance Memorial Medical Center in Torrance, California, part of Cedars-Sinai Health System.
What is Dr. Ajit Singh Mannan's office phone number?
The practice phone on file for Dr. Mannan is (310) 325-9110.
What is Dr. Ajit Singh Mannan's medical license number?
Dr. Mannan holds California license A133177.
Which hospitals is Dr. Ajit Singh Mannan affiliated with?
Dr. Mannan practices at Torrance Memorial Medical Center in Torrance, California.
What medical group is Dr. Ajit Singh Mannan part of?
Dr. Mannan is linked to Torrance Memorial Physician Network.
Does Dr. Ajit Singh Mannan accept Medicare?
Yes. CMS data shows Dr. Mannan billed Medicare for 752 services in 2024, and Dr. Mannan accepts Medicare assignment.
How many Medicare patients does Dr. Ajit Singh Mannan see?
CMS counts 233 Medicare patients who saw Dr. Mannan in 2024, with an average age of 79.
What services does Dr. Ajit Singh Mannan bill to Medicare?
In 2024, Dr. Mannan's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99232).
Show 5 more questionsShow fewer questions
Where did Dr. Ajit Singh Mannan go to medical school?
Dr. Mannan graduated from David Geffen School of Medicine at UCLA in 2013.
What drugs does Dr. Ajit Singh Mannan prescribe most?
In 2024 Medicare Part D data, Dr. Mannan's most prescribed drugs by claims were Cefdinir, Ondansetron HCl and Atorvastatin Calcium.
Has Dr. Ajit Singh Mannan received payments from drug or device companies?
CMS Open Payments shows $4,315 in general payments to Dr. Mannan from 21 companies from 2017 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Ajit Singh Mannan been practicing?
Dr. Mannan graduated from medical school in 2013, 13 years ago.
What insurance does Dr. Ajit Singh Mannan accept?
Dr. Mannan is in network with 15 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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