Ajit Mannan, M.D.
NPI 1659613719 · Internal Medicine Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ajit Mannan, M.D. is a Internal Medicine Physician provider in Torrance, CA (NPI 1659613719).
Provider details
- NPI number
- 1659613719
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A133177 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
752 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 396 | $122 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 151 | $118 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 86 | $82 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 79 | $178 |
| Advance Care Planning, First 30 Minutes99497 | 21 | $78 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 19 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefdinir | 32 | 32 |
| Ondansetron Hcl | 26 | 25 |
| Atorvastatin Calcium | 17 | 15 |
| Prednisone | 14 | 14 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 14 | 13 |
| Amlodipine Besylate | 13 | — |
| Furosemide | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$629 across 29 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-03-26
- Last updated
- 2016-06-29
Frequently asked questions
- What is Ajit Mannan's NPI number?
- Ajit Mannan's National Provider Identifier (NPI) is 1659613719, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ajit Mannan's specialty?
- Ajit Mannan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ajit Mannan located?
- Ajit Mannan's practice location on file with NPPES is 3330 Lomita Blvd, Torrance, CA 90505.
- What is Ajit Mannan's phone number?
- The practice phone number listed in the NPPES registry for Ajit Mannan is (310) 891-6623.
- Does Ajit Mannan accept Medicare?
- Ajit Mannan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ajit Mannan's NPI active?
- Yes — Ajit Mannan's NPI (1659613719) is active in the NPPES registry as of the last update on 2016-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.