Robert Chalfin, MD
NPI 1841295318 · Internal Medicine Physician · Warminster, PA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Chalfin, MD is a Internal Medicine Physician provider in Warminster, PA (NPI 1841295318).
Provider details
- NPI number
- 1841295318
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD0623406 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,731 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 589 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 571 | $131 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 394 | $109 |
| Advance Care Planning, First 30 Minutes99497 | 291 | $84 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 221 | $133 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 214 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 982 | 217 |
| Levothyroxine Sodium | 803 | 145 |
| Apixabanbrand: Eliquis | 672 | 71 |
| Furosemide | 619 | 116 |
| Losartan Potassium | 602 | 132 |
| Amlodipine Besylate | 591 | 137 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-20
- Last updated
- 2014-07-14
Frequently asked questions
- What is Robert Chalfin's NPI number?
- Robert Chalfin's National Provider Identifier (NPI) is 1841295318, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Chalfin's specialty?
- Robert Chalfin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Chalfin located?
- Robert Chalfin's practice location on file with NPPES is 225 Newtown Rd, Warminster, PA 18974-5221.
- What is Robert Chalfin's phone number?
- The practice phone number listed in the NPPES registry for Robert Chalfin is (215) 441-6789.
- Does Robert Chalfin accept Medicare?
- Robert Chalfin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Chalfin's NPI active?
- Yes — Robert Chalfin's NPI (1841295318) is active in the NPPES registry as of the last update on 2014-07-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.