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DR. MICHAEL ALBERT HATTWICK MD
NPI 1356496988
Internal Medicine in Fairfax, VA

Active since January 24, 2007PECOS EnrolledAccepts Medicare Assignment
8301 ARLINGTON BLVD, SUITE 405, FAIRFAX, VA 22031(703) 698-9000(703) 876-8911 Get Directions Write a Review

NPPES record last updated: November 2, 2011. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Michael Albert Hattwick Md NPPES

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

DR. MICHAEL ALBERT HATTWICK MD (NPI 1356496988) is an individual internal medicine provider in Fairfax, Virginia, licensed in Virginia (0101028343) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of Baylor College Of Medicine (1968).

NPPES Registry Identity

NPI1356496988
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MICHAEL ALBERT HATTWICKCredential: MD
Location Address8301 ARLINGTON BLVD, SUITE 405Fairfax, VA 22031-2902
Mailing Address8301 Arlington Blvd, Suite 405Fairfax, VA 22031-2902 · (703) 698-9000 · Fax (703) 876-8911
Phone(703) 698-9000
Fax(703) 876-8911
Sole ProprietorNo
Medical School CMSBaylor College Of MedicineGraduated 1968
Enumeration DateJanuary 24, 2007
Last NPPES UpdateNovember 2, 2011
✔ NPI 1356496988 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in VA · 0101028343
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
8301 ARLINGTON BLVD, Fairfax, VA 22031
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Other Identifiers 1

Medicare UPINB93669VA

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. Michael Albert Hattwick Md 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 ID2668576612
PECOS Enrollment IDI20110126000136
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

2

Medicare enrollment records show Michael Hattwick reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Inova Health Care Services
0.5 mi
Internal Medicine
3300 GALLOWS RD, PHYSICIAN SERVICES
Falls Church, VA 22042
  • Reassigned Medicare billing, District of Columbia and Virginia enrollments
  • Also billed through NPI 1588717755 (Virginia)
  • 2,618 clinicians in this Medicare group
NPI 1952320061 (703) 321-2627
Northern Virginia Healthcare, P.C
5.6 mi
Internal Medicine
3930 PENDER DR STE 270
Fairfax, VA 22030
  • Reassigned Medicare billing, Virginia enrollment
  • Medicare enrollment name: Northern Virginia Healthcare PC
NPI 1922603257 (703) 698-1600

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 22031 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
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
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.

Reported Quality Measures

e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
73%552 patients1/55-star benchmark: 99%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
35%20 patients2/55-star benchmark: 97%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
80%20 patients4/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
5%20 patients1/55-star benchmark: 89%
View, Download, or Transmit (VDT)
At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.
40%20 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

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

MRS. CAROLYN MARIE LIBERT MSPT
Physical Therapist
8301 ARLINGTON BLVD, SUITE 102
FAIRFAX, VA 22031
Fairfax County (703) 207-8315
PHYSIOTHERAPY ASSOCIATES INC
Clinic/Center (Rehabilitation)
8301 ARLINGTON BLVD, SUITE 209
FAIRFAX, VA 22031
Fairfax County (703) 207-8513
DR. TANYA HUSSEIN DRUMMOND D.D.S.
Dentist (General Practice)
8301 ARLINGTON BLVD, SUITE 503
FAIRFAX, VA 22031
Fairfax County (703) 560-1660
DR. ZHOU'S CLINIC, PLLC
Exclusive Provider Organization
8301 ARLINGTON BLVD, SUITE 309
FAIRFAX, VA 22031
Fairfax County (703) 303-2543
FAIRFAX PULMONARY & CRITICAL CARE GROUP LLC
Internal Medicine (Pulmonary Disease)
8301 ARLINGTON BLVD, SUITE T5
FAIRFAX, VA 22031
Fairfax County (703) 208-2273
DR. CAROL LYNN PIATT M.D.
Specialist
8301 ARLINGTON BLVD, SUITE 501
FAIRFAX, VA 22031
Fairfax County (703) 560-3372
ALEXIA IRIS CARBALLO
Audiologist-Hearing Aid Fitter
8301 ARLINGTON BLVD, STE 302
FAIRFAX, VA 22031
Fairfax County (703) 204-1142
MS. HODA K MAKKAWI M.D.
General Practice
8301 ARLINGTON BLVD, SUITE 100
FAIRFAX, VA 22031
Fairfax County (703) 849-0900

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 Michael Hattwick's NPI number?

The NPI number for Michael Hattwick is 1356496988. It was assigned to this individual provider in the NPPES registry on January 24, 2007.

Where is Michael Hattwick located?

Michael Hattwick practices at 8301 Arlington Blvd Suite 405, Fairfax, VA 22031. The listed phone number is (703) 698-9000.

What is Michael Hattwick's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Michael Hattwick enrolled in Medicare?

Yes. Michael Hattwick 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 Michael Hattwick's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Hattwick reassigns Medicare benefits to 2 organizations: Inova Health Care Services (Falls Church, VA) and Northern Virginia Healthcare, P.C (Fairfax, VA). 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 Michael Hattwick'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 Michael Hattwick was last updated on November 2, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.