Ranjan Mahajan, MD,FACP
NPI 1861581266 · Geriatric Medicine (Internal Medicine) Physician · Largo, FL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ranjan Mahajan, MD,FACP is a Geriatric Medicine (Internal Medicine) Physician provider in Largo, FL (NPI 1861581266).
Provider details
- NPI number
- 1861581266
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD,FACP
- Sex
- Male
- Sole proprietor
- No
- License
- ME 0069005 (FL)
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
19 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
5,250 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,477 | $92 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 965 | $9 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 666 | $77 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 360 | $60 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 247 | $75 |
| Advance Care Planning, First 30 Minutes99497 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 229 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,055 | 318 |
| Levothyroxine Sodium | 973 | 244 |
| Rosuvastatin Calcium | 860 | 277 |
| Pantoprazole Sodium | 707 | 194 |
| Metoprolol Succinate | 625 | 170 |
| Losartan Potassium | 585 | 167 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$638 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
- 2006-10-12
- Last updated
- 2014-10-06
Frequently asked questions
- What is Ranjan Mahajan's NPI number?
- Ranjan Mahajan's National Provider Identifier (NPI) is 1861581266, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ranjan Mahajan's specialty?
- Ranjan Mahajan is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Ranjan Mahajan located?
- Ranjan Mahajan's practice location on file with NPPES is 150 Clearwater Largo Rd N, Largo, FL 33770-2388.
- What is Ranjan Mahajan's phone number?
- The practice phone number listed in the NPPES registry for Ranjan Mahajan is (727) 518-0822.
- Does Ranjan Mahajan accept Medicare?
- Ranjan Mahajan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ranjan Mahajan's NPI active?
- Yes — Ranjan Mahajan's NPI (1861581266) is active in the NPPES registry as of the last update on 2014-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.