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DR. GAJAN A MAHENDIRAN M.D.
NPI 1396839346
Anesthesiology - Pain Medicine in Warrenton, VA

Active since October 03, 2006PECOS EnrolledAccepts Medicare Assignment
74.1/100
CMS Quality Rating
500 HOSPITAL DR, WARRENTON, VA 20186(540) 349-0514 Get Directions Write a Review

NPPES record last updated: April 2, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Gajan A Mahendiran M.d. NPPES

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

DR. GAJAN A MAHENDIRAN M.D. (NPI 1396839346) is an individual pain medicine provider in Warrenton, Virginia, licensed in Virginia (0101237547) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2001).

NPPES Registry Identity

NPI1396839346
Entity TypeIndividualMale
Primary Taxonomy207LP2900X
Provider Legal NameDR. GAJAN A MAHENDIRANCredential: M.D.
Location Address500 HOSPITAL DRWarrenton, VA 20186-3027
Mailing Address68 S. Service Rd., Ste 350Melville, NY 11747-2358 · (516) 945-3107 · Fax (516) 945-3131
Phone(540) 349-0514
Sole ProprietorNo
Medical School CMSOtherGraduated 2001
Enumeration DateOctober 3, 2006
Last NPPES UpdateApril 2, 2015
✔ NPI 1396839346 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiology · Pain MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207LP2900X
License✔ Licensed in VA · 0101237547
Definition
An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.
500 HOSPITAL DR, Warrenton, VA 20186
Open in Google Maps ↗

Other Identifiers 9

Other484645VA · Ncppo
OtherK142-0001VA · Care First 2005
Medicare UPINI45913VA
Other139698VA · Anthem
Medicaid1396839346VA
Medicare PIN009142F81VA
Medicare PIN018472F89DC
Other296032VA · Amerigroup
Other9396107VA · Phcs

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Care Network of Michigan.Insurance ›

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. Gajan A Mahendiran 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 ID941220404
PECOS Enrollment IDI20051129000482, I20051129000572
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 Gajan Mahendiran reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ambulatory Anesthesia Associates LLC
35 mi
Anesthesiology
6355 WALKER LANE, #200
Alexandria, VA 22310
  • Reassigned Medicare billing, District of Columbia enrollment
  • 74 clinicians in this Medicare group
NPI 1720192230 (703) 922-9501
Professional Anesthesia Group, LLC
35 mi
Anesthesiology
1500 DIXON ST STE 101
Fredericksburg, VA 22401
  • Reassigned Medicare billing, Virginia enrollment
  • 135 clinicians in this Medicare group
NPI 1619149648 (540) 371-5349
Northstar Anesthesia Of Virginia, LLC
40 mi
Anesthesiology
2501 PARKERS LN
Alexandria, VA 22306
  • Reassigned Medicare billing, District of Columbia and Virginia enrollments
  • 634 clinicians in this Medicare group
NPI 1194488791 (214) 687-0497
Northstar Anesthesia Of Michigan PLLC
1,146 mi
Anesthesiology
6225 N STATE HIGHWAY 161 STE 200
Irving, TX 75038
  • Reassigned Medicare billing, Michigan enrollment
  • 369 clinicians in this Medicare group
NPI 1871986372 (214) 687-0675

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 7

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.

Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
319 services299 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
89 services89 patients
Anesthesia for exam of colon using an endoscope 00812
Anesthesia for a colon examination with an endoscope is a method used to ensure comfort during the procedure. It involves administering medication to help you relax or sleep, thus reducing discomfort as the endoscope, a thin, flexible tube, is navigated through your colon.
41 services41 patients
Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) 64415
This procedure involves injecting a numbing agent or steroid into your arm's nerve bundle. It's done to manage pain or inflammation. The injection helps block nerve signals that cause discomfort, providing relief. It's a safe, common procedure.
40 services40 patients
Anesthesia for procedure on small and large bowel using an endoscope 00813
Anesthesia for an endoscopic procedure on the small and large bowel ensures comfort and relaxation during the procedure. It involves administering medicine to help you sleep or feel drowsy. This allows the doctor to examine your bowels without causing you discomfort or pain.
36 services36 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
29 services29 patients

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.

74.1/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality85.63
Improvement Activities40
Cost40.03

Reported Quality Measures

Post-Anesthetic Transfer of Care Measure: Procedure Room to a Post Anesthesia Care Unit (PACU)
Percentage of patients, regardless of age, who are under the care of an anesthesia practitioner and are admitted to a PACU or other non-ICU location in which a post-anesthetic formal transfer of care protocol or checklist which includes the key transfer of…
100%1,005 patients5/55-star benchmark: 100%
Pre-operative OSA assessment
Percentage of patients who undergo a surgical procedure in the operating room/procedure room that have a pre-operative assessment for Obstructive Sleep Apnea (OSA)
98%1,173 patients4/55-star benchmark: 100%
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.

DR. ALEXANDER-NICHOLAS DESIERTO SUTINGCO MD FACEP
Emergency Medicine (Emergency Medical Services)
500 HOSPITAL DR
WARRENTON, VA 20186
Fauquier County (540) 349-0595
NANDINI CHHITWAL MD
Internal Medicine (Rheumatology)
500 HOSPITAL DR
WARRENTON, VA 20186
Fauquier County (540) 316-5940
DR. JOSEPH G SERVIDEO MD
Emergency Medicine (Emergency Medical Services)
500 HOSPITAL DR
WARRENTON, VA 20186
Fauquier County (540) 349-0595
MELISSA BRAUN NP
Nurse Practitioner (Neonatal)
500 HOSPITAL DR
WARRENTON, VA 20186
Fauquier County (540) 316-4023
MARIA ELENA AQUINO DWYER PT
Physical Therapist
500 HOSPITAL DR
WARRENTON, VA 20186
Fauquier County (540) 316-2680
CHRISTINE SNELL MD
Emergency Medicine (Emergency Medical Services)
500 HOSPITAL DR
WARRENTON, VA 20186
Fauquier County (540) 349-0595
MR. JOSEPH CHU MD
Emergency Medicine (Emergency Medical Services)
500 HOSPITAL DR
WARRENTON, VA 20186
Fauquier County (540) 349-0595
DAVID C REILLY M.D.
Radiology (Diagnostic Radiology)
500 HOSPITAL DR
WARRENTON, VA 20186
Fauquier County (540) 316-5000

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 Gajan Mahendiran's NPI number?

The NPI number for Gajan Mahendiran is 1396839346. It was assigned to this individual provider in the NPPES registry on October 3, 2006.

Where is Gajan Mahendiran located?

Gajan Mahendiran practices at 500 Hospital Dr, Warrenton, VA 20186. The listed phone number is (540) 349-0514.

What is Gajan Mahendiran's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Is Gajan Mahendiran enrolled in Medicare?

Yes. Gajan Mahendiran 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 Gajan Mahendiran's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gajan Mahendiran reassigns Medicare benefits to 4 organizations: Ambulatory Anesthesia Associates LLC (Alexandria, VA), Professional Anesthesia Group, LLC (Fredericksburg, VA), Northstar Anesthesia Of Virginia, LLC (Alexandria, VA) and Northstar Anesthesia Of Michigan PLLC (Irving, TX). 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 Gajan Mahendiran's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gajan Mahendiran accept?

Health plans from Blue Care Network of Michigan list Gajan Mahendiran as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gajan Mahendiran was last updated on April 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.