Individual provider Active NPI

Rehaan Mujtaba Ahsan, M.D.

  • Anesthesiology Physician
  • Warrenton, VA
National Provider Identifier
1558436733
Registry record updated Sep 18, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
0101231465 Issued in VA
Practice address
500 Hospital Dr.
Fauquier Hospital
Warrenton, VA 20186
Phone
(540) 316-5000
NPI assigned
Nov 22, 2006
Last updated
Sep 18, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 18, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 0101231465 VA Primary

Addresses

Primary practice location

500 Hospital Dr.
Fauquier Hospital
Warrenton, VA 20186

Mailing address

3998 Fair Ridge Dr Ste 300
Fairfax, VA 22033-2907
Phone (703) 766-9737

Other names 1

  • Mujtaba Ahsan Ansari Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in VA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20070209000043 VA Practitioner - AnesthesiologyPractitioner - Interventional Pain Management 1052216397 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
AnesthesiologyAlso: Interventional Pain Management
Education
Other, 1992
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

1305 Walt Whitman Rd
Suite 300
Melville, NY 11747-4300

1602 Skipwith Rd
Henrico, VA 23229-5205
Phone (804) 289-4500

19455 Deerfield Ave
Suite 204
Leesburg, VA 20176-8102
Phone (703) 724-9950

7700 E Parham Rd
Henrico, VA 23294-4301
Phone (804) 747-5600

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
North American Partners in Anesthesia New Hampshire LLP Anesthesiology Past Accepting new patients
La Porte County Anesthesia Associates LLC Anesthesiology Past Accepting new patients
Northeast Indiana Anesthesiology, PC Anesthesiology Past Accepting new patients
Manassas Anesthesia Associates PC Past Accepting new patients
Northeast Indiana Colon Rectal Surgeons PC Past Accepting new patients

Organizations & group practices 6

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 1

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1164153600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758153600000",
    "number": "1558436733",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3998 FAIR RIDGE DR STE 300",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220332907",
            "telephone_number": "703-766-9737",
            "fax_number": "703-766-9725"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "500 HOSPITAL DR.",
            "address_2": "FAUQUIER HOSPITAL",
            "city": "WARRENTON",
            "state": "VA",
            "postal_code": "20186",
            "telephone_number": "540-316-5000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AHSAN",
        "first_name": "REHAAN",
        "middle_name": "MUJTABA",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-11-22",
        "last_updated": "2025-09-18",
        "certification_date": "2025-09-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "VA",
            "license": "0101231465",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MUJTABA",
            "last_name": "ANSARI",
            "middle_name": "AHSAN",
            "credential": "MD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Warrenton, VA

Sources for this page

Verify at the official NPI Registry.