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Gastroenterology

Joshua Hartman, MD

Works at hospitals in New York, NY · New York

Summary

Dr. Joshua Hartman, MD is a gastroenterologist at 540 Gramatan Ave, Mount Vernon, NY 10552. Phone: (914) 668-5944. Accepts Medicare assignment. In 2024, Joshua Hartman had 356 Original Medicare patients and 688 services. NPI 1730421355. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Gastroenterologist (Medicare lists Gastroenterology)
  • Address: 540 Gramatan Ave, Mount Vernon, NY 10552 · Directions (2 more locations)
  • Phone: (914) 668‑5944
  • Medicare: Accepts Medicare assignment
  • Hospital: New York-Presbyterian Hospital
  • Group practice: Lawrence Medical Associates PC
  • Medical school: New York Medical College · graduated 2013 (13 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Joshua Hartman, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Joshua Hartman accept Medicare assignment?
Yes. Medicare's clinician data says Joshua Hartman accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Joshua Hartman see?
In 2024, CMS data shows 356 Original Medicare patients and 688 services for Joshua Hartman. This counts Original Medicare only and measures volume, not quality.
What is Joshua Hartman's NPI number?
1730421355. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Joshua Hartman, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients356
Services billed to Medicare688
Different services or procedures19
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)202 services
  2. Biopsy of large bowel using a flexible endoscope (45380)92 services
  3. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)90 services
  4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)80 services
  5. Insertion of needle into vein for collection of blood sample (36415)51 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure73%
  • Arthritis52%
  • Diabetes39%
  • Ischemic heart disease29%
  • Anxiety24%

Hospitals where Joshua Hartman works

Medicare's Facility Affiliation Data lists Joshua Hartman at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Joshua Hartman is enrolled with Medicare (CMS data updated October 2, 2026).

  • 540 Gramatan AveMount Vernon, NY 10552 (914) 668‑5944
  • 55 Palmer AveBronxville, NY 10708
  • 685 White Plains RdEastchester, NY 10709

Group practices

Medicare enrollment lists Joshua Hartman as a member of this group (CMS data updated October 2, 2026).

  • Lawrence Medical Associates PC224 clinicians in the group

Specialties

Find other Gastroenterology doctors in New York →

Other gastroenterologists in New York

Clinicians with the same Medicare primary specialty in New York — not a recommendation.

All gastroenterologists in New York →

Other clinicians in Lawrence Medical Associates PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolNew York Medical College
Graduation year2013 (13 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1730421355
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians