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

Family Practice

Alison N. Huffstetler, MD

Works at hospitals in Falls Church, VA · Virginia

Summary

Dr. Alison N. Huffstetler, MD is a family doctor at 3650 Joseph Siewick Dr, Suite 400, Fairfax, VA 22033. Phone: (703) 391-2020. Accepts Medicare assignment. In 2024, Alison N. Huffstetler had 39 Original Medicare patients and 207 services. NPI 1649665688. 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: Family doctor (Medicare lists Family Practice)
  • Address: 3650 Joseph Siewick Dr, Suite 400, Fairfax, VA 22033 · Directions
  • Phone: (703) 391‑2020
  • Medicare: Accepts Medicare assignment
  • Hospital: Inova Fairfax Hospital
  • Group practice: Inova Physician Partners LLC
  • Medical school: graduated 2015 (11 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Alison N. Huffstetler, 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 Alison N. Huffstetler accept Medicare assignment?
Yes. Medicare's clinician data says Alison N. Huffstetler 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 Alison N. Huffstetler see?
In 2024, CMS data shows 39 Original Medicare patients and 207 services for Alison N. Huffstetler. This counts Original Medicare only and measures volume, not quality.
What is Alison N. Huffstetler's NPI number?
1649665688. 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 Alison N. Huffstetler, 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 patients39
Services billed to Medicare207
Different services or procedures19
Participating Medicare providerYes
Average age of these patients72

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)34 services
  2. 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's (G2211)24 services
  3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)18 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 cholesterol74%
  • High blood pressure67%
  • Arthritis44%
  • Depression33%
  • Diabetes31%
  • Chronic kidney disease28%

Hospitals where Alison N. Huffstetler works

Medicare's Facility Affiliation Data lists Alison N. Huffstetler 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 Alison N. Huffstetler is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Alison N. Huffstetler as a member of this group (CMS data updated October 2, 2026).

  • Inova Physician Partners LLC262 clinicians in the group

Specialties

Find other Family Practice doctors in Virginia →

Other family doctors in Fairfax

Clinicians with the same Medicare primary specialty in Fairfax, VA — not a recommendation.

All family doctors in Fairfax →

Other clinicians in Inova Physician Partners LLC

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

Clinician information

CredentialMD
Graduation year2015 (11 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1649665688
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