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MICHAEL BRENNAN M.D.
NPI 1780624684
Anesthesiology in Washington, DC

Active since June 08, 2006PECOS EnrolledAccepts Medicare Assignment
5255 LOUGHBORO RD NW, WASHINGTON, DC 20016(202) 243-2280 Get Directions Write a Review

NPPES record last updated: October 7, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Michael Brennan M.d. NPPES

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

MICHAEL BRENNAN M.D. (NPI 1780624684) is an individual anesthesiology provider in Washington, District Of Columbia, licensed in District Of Columbia (MD31900) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Michigan Medical School (1987).

NPPES Registry Identity

NPI1780624684
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameMICHAEL BRENNANCredential: M.D.
Location Address5255 LOUGHBORO RD NWWashington, DC 20016-2695
Mailing Address255 W Michigan AveJackson, MI 49201-2218 · (517) 787-6440 · Fax (517) 787-4146
Phone(202) 243-2280
Sole ProprietorNo
Medical School CMSUniversity Of Michigan Medical SchoolGraduated 1987
Enumeration DateJune 8, 2006
Last NPPES UpdateOctober 7, 2010
✔ NPI 1780624684 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in DC · MD31900
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
5255 LOUGHBORO RD NW, Washington, DC 20016
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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 and accepts Medicare assignment

Michael Brennan 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 ID143293555
PECOS Enrollment IDI20050616000785
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 Reassignment

Medicare enrollment records show Michael Brennan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Surgical Anesthesia Associates, PLLC
Same address
Anesthesiology
5255 LOUGHBORO RD NW
Washington, DC 20016
  • Reassigned Medicare billing, District of Columbia enrollment
  • 127 clinicians in this Medicare group
NPI 1811930647 (202) 243-2280

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 9

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 electroshock therapy 00104
Anesthesia for electroshock therapy involves administering medications to put you into a deep sleep. This ensures you won't feel pain or remember the procedure. It's essential for your comfort and safety during the therapy.
44 services27 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.
42 services42 patients
Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447
This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.
37 services37 patients
Anesthesia for procedure for total knee joint replacement 01402
Anesthesia for a total knee joint replacement numbs your body to eliminate pain during surgery. This could be general anesthesia where you're unconscious, or regional anesthesia where only the leg is numb. It's administered by a specialist, ensuring safety and comfort.
32 services32 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.
26 services26 patients
Anesthesia for total hip replacement 01214
Anesthesia for total hip replacement is a medical service where medication is given to eliminate pain during surgery. Two types are commonly used: general anesthesia, making you unconscious, or spinal anesthesia, numbing the lower body. The choice depends on your health and your doctor's recommendation.
24 services24 patients

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.

DANIEL RICHARD STAIRIKER CRNP
Nurse Practitioner
5255 LOUGHBORO RD NW
WASHINGTON, DC 20016
District of Columbia (202) 537-4000
HOWARD JIAHAU LI MD
Obstetrics & Gynecology
5255 LOUGHBORO RD NW
WASHINGTON, DC 20016
District of Columbia (202) 537-4000
MR. JOSEPH JOHN LIBRICZ JR. P.A.-C.
Physician Assistant (Surgical)
5255 LOUGHBORO RD NW
WASHINGTON, DC 20016
District of Columbia (301) 589-3977
MICHAEL GOLDENHORN PHARMD
Pharmacist
5255 LOUGHBORO RD NW
WASHINGTON, DC 20016
District of Columbia (202) 537-4769
AARON CONARD
Radiology (Radiological Physics)
5255 LOUGHBORO RD NW
WASHINGTON, DC 20016
District of Columbia (240) 366-7325
MONTY H. OPPENHEIM MD
Anesthesiology
5255 LOUGHBORO RD NW
WASHINGTON, DC 20016
District of Columbia (202) 243-2280
ANDREA L RICHARDSON MD PHD
Pathology (Cytopathology)
5255 LOUGHBORO RD NW
WASHINGTON, DC 20016
District of Columbia (202) 537-4455
DR. SHIVANI AHLAWAT MD
Radiology (Diagnostic Radiology)
5255 LOUGHBORO RD NW
WASHINGTON, DC 20016
District of Columbia (202) 537-4686

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 Brennan's NPI number?

The NPI number for Michael Brennan is 1780624684. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Where is Michael Brennan located?

Michael Brennan practices at 5255 Loughboro Rd NW, Washington, DC 20016. The listed phone number is (202) 243-2280.

What is Michael Brennan's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Michael Brennan enrolled in Medicare?

Yes. Michael Brennan 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 organization bills Medicare for Michael Brennan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Brennan reassigns Medicare benefits to Surgical Anesthesia Associates, PLLC (Washington, DC). The 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 Brennan'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 Brennan was last updated on October 7, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.