Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Jason M. Shackelford, MD

Works at hospitals in Doylestown, PA · Philadelphia, PA · Sellersville, PA · Pennsylvania

Summary

Dr. Jason M. Shackelford, MD is an internal medicine doctor at 1100 Horizon Cir, Chalfont, PA 18914. Phone: (215) 394-0400. Accepts Medicare assignment. In 2024, Jason M. Shackelford had 179 Original Medicare patients and 781 services. NPI 1023204534. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Jason M. Shackelford, 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 Jason M. Shackelford accept Medicare assignment?
Yes. Medicare's clinician data says Jason M. Shackelford 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 Jason M. Shackelford see?
In 2024, CMS data shows 179 Original Medicare patients and 781 services for Jason M. Shackelford. This counts Original Medicare only and measures volume, not quality.
What is Jason M. Shackelford's NPI number?
1023204534. 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 Jason M. Shackelford, 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 patients179
Services billed to Medicare781
Different services or procedures27
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)349 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)109 services
  3. Insertion of needle into vein for collection of blood sample (36415)70 services
  4. Administration of influenza virus vaccine (G0008)48 services
  5. Influenza vaccine split virus, preservative free (90662)45 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 blood pressure75%
  • High cholesterol75%
  • Arthritis43%
  • Anxiety33%
  • Depression25%
  • Diabetes23%

Hospitals where Jason M. Shackelford works

Medicare's Facility Affiliation Data lists Jason M. Shackelford 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 Jason M. Shackelford is enrolled with Medicare (CMS data updated October 2, 2026).

  • 1100 Horizon CirChalfont, PA 18914 (215) 394‑0400
  • 2000 Westinghouse Dr, Suite 200Cranberry Twp, PA 16066
  • 4275 County Line Rd, Suite 26Chalfont, PA 18914 (267) 952‑8120

Group practices

Medicare enrollment lists Jason M. Shackelford as a member of these groups (CMS data updated October 2, 2026).

  • Phoenix Rehabilitation and Health Services Inc2,800 clinicians in the group
  • Advocare, LLC386 clinicians in the group
  • Rehabclinics SPT Inc104 clinicians in the group

Specialties

Find other Internal Medicine doctors in Pennsylvania →

Other internal medicine doctors in Chalfont

Clinicians with the same Medicare primary specialty in Chalfont, PA — not a recommendation.

All internal medicine doctors in Chalfont →

Other clinicians in Phoenix Rehabilitation and Health Services Inc

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

Clinician information

CredentialMD
Medical schoolTemple University School Of Medicine
Graduation year2006 (20 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1023204534
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