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DR. AARON ZACHARY HETTINGER M.D.
NPI 1396852281
Emergency Medicine in Washington, DC

Active since August 24, 2006PECOS Enrolled
95.99/100
CMS Quality Rating
110 IRVING ST NW, SUITE NA-1177, WASHINGTON, DC 20010(202) 877-2525(202) 877-9263 Get Directions Write a Review

NPPES record last updated: June 21, 2011. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Aaron Zachary Hettinger M.d. NPPES

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

DR. AARON ZACHARY HETTINGER M.D. (NPI 1396852281) is an individual emergency medicine provider in Washington, District Of Columbia, licensed in District Of Columbia (MD038665) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1396852281
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. AARON ZACHARY HETTINGERCredential: M.D.
Location Address110 IRVING ST NW, SUITE NA-1177Washington, DC 20010-3017
Mailing Address110 Irving St Nw, Suite Na-1177Washington, DC 20010-3017 · (202) 877-2525 · Fax (202) 877-9263
Phone(202) 877-2525
Fax(202) 877-9263
Sole ProprietorNo
Enumeration DateAugust 24, 2006
Last NPPES UpdateJune 21, 2011
✔ NPI 1396852281 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in DC · MD038665✔ Licensed in MD · D72492
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
110 IRVING ST NW, Washington, DC 20010
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Aaron Zachary Hettinger M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Aaron Hettinger reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Medstar Medical Group II LLC
Same address
Anesthesiology
110 IRVING ST NW
Washington, DC 20010
  • Reassigned Medicare billing, District of Columbia and Maryland enrollments
  • Also billed through NPI 1376887844 (Maryland)
  • 3,530 clinicians in this Medicare group
NPI 1023836137 (703) 558-1403
Whc Emerg Phys
Same address
Emergency Medical Services
110 IRVING ST NW
Washington, DC 20010
  • Reassigned Medicare billing, District of Columbia and Maryland enrollments
  • Medicare enrollment name: Whc Physician Group LLC
  • Also billed through NPI 1700154226 (Maryland)
  • 613 clinicians in this Medicare group
NPI 1306260625 (703) 558-1544

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

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
148 services146 patients
Electrocardiogram (ecg) 1 to 3 leads with review by physician only 93042
An Electrocardiogram (ECG) is a non-invasive test that records the electrical activity of your heart. 1 to 3 leads or sensors are placed on your body to capture this data. A physician then reviews the results to evaluate your heart's health.
76 services74 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
47 services47 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
32 services32 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20010 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
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
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.

95.99/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality85.48
Promoting Interoperability100
Improvement Activities40
Cost74.87

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.

MS. JANET E JUMPER N.P.
Nurse Practitioner (Acute Care)
110 IRVING ST NW, 4B42
WASHINGTON, DC 20010
District of Columbia (202) 877-7462
EMILY JEAN SIEGEL MD
Student in an Organized Health Care Education/Training Program
110 IRVING ST NW
WASHINGTON, DC 20010
District of Columbia (202) 877-8080
KIMBERLY SMITH
Radiology (Diagnostic Radiology)
110 IRVING ST NW
WASHINGTON, DC 20010
District of Columbia (301) 902-1073
MISS ORE-OLUWA ODULANA LIMA DA SILVA CRNA
Nurse Anesthetist, Certified Registered
110 IRVING ST NW
WASHINGTON, DC 20010
District of Columbia (202) 877-7504
DR. FAY HORNG M.D.
Anesthesiology
110 IRVING ST NW
WASHINGTON, DC 20010
District of Columbia (202) 877-7504
DR. MICHAEL B SHVARTS MD
Radiology (Diagnostic Radiology)
110 IRVING ST NW
WASHINGTON, DC 20010
District of Columbia (202) 877-7000
DR. SCOTT THOMAS MARTYNA D.M.D.
Student in an Organized Health Care Education/Training Program
110 IRVING ST NW, DEPT. OF ORAL AND MAXILLOFACIAL SURGERY
WASHINGTON, DC 20010
District of Columbia (202) 877-7332
MS. NOOR-UL-HUDA AMER MEHDI M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
110 IRVING ST NW
WASHINGTON, DC 20010
District of Columbia (202) 877-7000

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 Aaron Hettinger's NPI number?

The NPI number for Aaron Hettinger is 1396852281. It was assigned to this individual provider in the NPPES registry on August 24, 2006.

Where is Aaron Hettinger located?

Aaron Hettinger practices at 110 Irving St NW Suite Na-1177, Washington, DC 20010. The listed phone number is (202) 877-2525.

What is Aaron Hettinger's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Aaron Hettinger enrolled in Medicare?

Yes. Aaron Hettinger is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Aaron Hettinger's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Hettinger reassigns Medicare benefits to 2 organizations: Medstar Medical Group II LLC (Washington, DC) and Whc Emerg Phys (Washington, DC). 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 Aaron Hettinger'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 Aaron Hettinger was last updated on June 21, 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.