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DR. NASSAR FARID KHAN M.D.
NPI 1396708608
Internal Medicine - Hematology in Fairfax, VA

Active since April 08, 2006PECOS EnrolledAccepts Medicare Assignment
81.28/100
CMS Quality Rating
3580 JOSEPH SIEWICK DR STE 403, FAIRFAX, VA 22033(703) 391-4395(703) 391-4394 Get Directions Write a Review

NPPES record last updated: December 14, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 14, 2021, Oct 16, 2020, Jun 29, 2018 (3 updates tracked since 2018).

About Dr. Nassar Farid Khan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. NASSAR FARID KHAN M.D. (NPI 1396708608) is an individual hematology provider in Fairfax, Virginia, licensed in Virginia (0101053383) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, maintains 9 additional practice locations, and is a graduate of Other (1985).

NPPES Registry Identity

NPI1396708608
Entity TypeIndividualMale
Primary Taxonomy207RH0000X
Provider Legal NameDR. NASSAR FARID KHANCredential: M.D.
Location Address3580 JOSEPH SIEWICK DR STE 403Fairfax, VA 22033-1764
Mailing AddressPo Box 37174Baltimore, MD 21297-3174 · (571) 423-5699 · Fax (571) 423-5698
Phone(703) 391-4395
Fax(703) 391-4394
Sole ProprietorYes
Medical School CMSOtherGraduated 1985
Enumeration DateApril 8, 2006
Last NPPES UpdateDecember 14, 20213 updates tracked since enumeration
NPPES CertifiedDecember 14, 2021
✔ NPI 1396708608 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · HematologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0000X
License✔ Licensed in VA · 0101053383
Definition
An internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma.
Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X · License 0101053383 (VA)
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License 0101053383 (VA)
3580 JOSEPH SIEWICK DR STE 403, Fairfax, VA 22033
Open in Google Maps ↗

Secondary Practice Locations 9

Location 12826 Old Lee Hwy, Suite 110Fairfax, VA 22031-4323 · Phone (703) 560-8444
Location 244055 Riverside Pkwy Ste 108Leesburg, VA 20176-5179 · Phone (703) 858-8600 · Fax (703) 858-8603
Location 34320 Seminary RdAlexandria, VA 22304-1535 · Phone (703) 504-3000 · Fax (703) 504-3388
Location 43600 Joseph Siewick DrFairfax, VA 22033-1709 · Phone (703) 391-3600 · Fax (703) 391-3414
Location 53300 Gallows RdFalls Church, VA 22042-3307 · Phone (703) 776-4001 · Fax (703) 776-7113
Location 68081 Innovation Park DrFairfax, VA 22031-4867 · Phone (571) 472-4724 · Fax (571) 472-0241
Location 71800 N Beauregard St Ste 210Alexandria, VA 22311-1735 · Phone (703) 933-8125 · Fax (703) 933-8216
Location 81800 N Beauregard St Ste 350Alexandria, VA 22311-1725 · Phone (703) 933-8125 · Fax (703) 933-8216
Location 98501 Arlington Blvd Ste 340Fairfax, VA 22031-4625 · Phone (703) 207-0733 · Fax (703) 207-0736

Other Identifiers 4

Medicaid005848784VA
Other2972-0001DC · Carefirst Dc
Other542000362Unitedhealth Group
Other542000362Tax Id

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Nassar Farid Khan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3577588128
PECOS Enrollment IDI20051012000735, I20160607000317
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Nassar Khan reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Inova Health Care Services
6.3 mi
Urgent Care
100 MAPLE AVE E
Vienna, VA 22180
  • Reassigned Medicare billing, Virginia and District of Columbia enrollments
  • Also billed through NPI 1669511051 (District of Columbia), NPI 1275097123 (Virginia)
  • 2,379 clinicians in this Medicare group
NPI 1275886418 (703) 938-5300
Virginia Internal Medicine Inc
12 mi
Internal Medicine
41816 FENWAY CIR
Ashburn, VA 20148
  • Reassigned Medicare billing, District of Columbia and Virginia enrollments
  • 127 clinicians in this Medicare group
NPI 1740525245 (347) 761-7200
M Management Group LLC
20 mi
Pulmonary Disease
4011 RANDOLPH RD
Silver Spring, MD 20902
  • Reassigned Medicare billing, District of Columbia and Virginia enrollments
  • Also billed through NPI 1356202253 (Virginia)
  • 40 clinicians in this Medicare group
NPI 1952117764 (301) 933-2500
M Medical Group, Inc.
28 mi
Critical Care Medicine
9106 PINE VIEW LN
Clinton, MD 20735
  • Reassigned Medicare billing, District of Columbia enrollment
  • 144 clinicians in this Medicare group
NPI 1780056168 (301) 856-2930

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22033 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$194.86 typical visit price
range $65.18 – $194.86
Typical copayment $48.71 (range $16.29 – $48.71)
Most-billed visit code 99205
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

81.28/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality70.77
Promoting Interoperability100
Improvement Activities40
Cost66.84

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ALLISON CHRISTIAN
Nurse Practitioner (Family)
3580 JOSEPH SIEWICK DR STE 403
FAIRFAX, VA 22033
Fairfax County (703) 391-4395
KRISTEN MICHELLE SMILEY-FLOWERS MSN,RN, FNP-BC
Nurse Practitioner (Family)
3580 JOSEPH SIEWICK DR STE 403
FAIRFAX, VA 22033
Fairfax County (703) 391-4385
DR. ANTHONY J FELICE M.D.
Internal Medicine (Medical Oncology)
3580 JOSEPH SIEWICK DR STE 403
FAIRFAX, VA 22033
Fairfax County (703) 391-4395
KHURRAM ANWAR MD
Internal Medicine (Medical Oncology)
3580 JOSEPH SIEWICK DR STE 403
FAIRFAX, VA 22033
Fairfax County (703) 391-4395
YULIA RUDNITSKY NURSE PRACTITIONER
Nurse Practitioner (Family)
3580 JOSEPH SIEWICK DR STE 403
FAIRFAX, VA 22033
Fairfax County (703) 391-4395
JOSHUA M ALLEN MD
Internal Medicine (Medical Oncology)
3580 JOSEPH SIEWICK DR STE 403
FAIRFAX, VA 22033
Fairfax County (703) 391-4395
NORTHERN VIRGINIA PELVIC SURGERY ASSOCIATES, PC
Obstetrics & Gynecology (Gynecologic Oncology)
3580 JOSEPH SIEWICK DR STE 403
FAIRFAX, VA 22033
Fairfax County (571) 308-1843
ANDREA L ALLEN
Registered Nurse
3580 JOSEPH SIEWICK DR STE 403
FAIRFAX, VA 22033
Fairfax County (703) 391-4395

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nassar Khan's NPI number?

The NPI number for Nassar Khan is 1396708608. It was assigned to this individual provider in the NPPES registry on April 8, 2006.

Where is Nassar Khan located?

Nassar Khan practices at 3580 Joseph Siewick Dr Ste 403, Fairfax, VA 22033. The listed phone number is (703) 391-4395.

What is Nassar Khan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology, with taxonomy code 207RH0000X.

Is Nassar Khan enrolled in Medicare?

Yes. Nassar Khan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Nassar Khan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nassar Khan reassigns Medicare benefits to 4 organizations: Inova Health Care Services (Vienna, VA), Virginia Internal Medicine Inc (Ashburn, VA), M Management Group LLC (Silver Spring, MD) and M Medical Group, Inc. (Clinton, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nassar Khan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Nassar Khan was last updated on December 14, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.