DR. NICHOLAS DUFF HAZEN M.D.
NPI 1205254174
Obstetrics & Gynecology in Washington, DC
About Dr. Nicholas Duff Hazen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NICHOLAS DUFF HAZEN M.D. (NPI 1205254174) is an individual obstetrics & gynecology provider in Washington, District Of Columbia, licensed in District Of Columbia (MD046205) and active in the NPI registry since March 2014. He is enrolled in Medicare PECOS and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses
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. Nicholas Duff Hazen 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.
Medicare Billing Reassignments
3Medicare enrollment records show Nicholas Hazen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 clinicians in this Medicare group
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia enrollment
- 861 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- Medicare enrollment name: Whc Physician Group LLC
- 613 clinicians in this Medicare group
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 20007 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Nicholas Hazen's NPI number?
The NPI number for Nicholas Hazen is 1205254174. It was assigned to this individual provider in the NPPES registry on March 28, 2014.
Where is Nicholas Hazen located?
Nicholas Hazen practices at 3800 Reservoir Rd NW # 3phc, Washington, DC 20007. The listed phone number is (202) 444-8531.
What is Nicholas Hazen's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Nicholas Hazen enrolled in Medicare?
Yes. Nicholas Hazen 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 Nicholas Hazen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Hazen reassigns Medicare benefits to 3 organizations: Medstar Medical Group II LLC (Washington, DC), Mgmc 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 Nicholas Hazen'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 Nicholas Hazen was last updated on August 10, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Dr. Nicholas Duff Hazen, M.D. · NPI 1205254174
Obstetrics & Gynecology physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since March 28, 2014.
## Identity
- **NPI:** 1205254174 (Entity type: Individual)
- **Enumerated:** March 28, 2014
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** MD046205 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 3800 RESERVOIR RD NW # 3PHC, Washington, DC 20007-2113
- **Phone:** (202) 444-8531 · **Fax:** (877) 544-7752
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group II LLC (NPI 1205562816, Washington, DC); Mgmc LLC (NPI 1316949654, Washington, DC); Whc Emerg Phys (NPI 1306260625, Washington, DC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** August 10, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1205254174) · Data from the CMS NPPES public registry.