Active NPI 1255361838 Individual Practitioner Male Practitioner

Dr. Michael Wagner Brook , MD

Anesthesiology • San Francisco, CA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Michael Brook, MD is a certified Anesthesiology practicing in San Francisco, CA. With approximately 39 years of clinical experience since completing medical education in 1987, Dr. Brook delivers high-quality medical care to the local community at 521 PARNASSUS AVE FL 4.

Dr. Brook maintains professional affiliations with Comfort Anesthesia Associates Inc, Northstar Anesthesia Of Virginia, Llc, University Anesthesia Medical Group and accepts Medicare assignment.

Frequently performed procedures and clinical services include destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint, destruction of lower or sacral spinal facet joint nerves with imaging guidance, injection of lower or sacral spine facet joint using imaging guidance, second level. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

521 Parnassus Ave Fl 4

San Francisco, CA 941432206

Telephone 4154769035

Associated Practice Facility / Clinic

🏢 Hanford Family Practice Facility NPI 1770685596

Medicare Profile & Education

Medical School

Other

Graduation Year

1987

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Anesthesiology in San Francisco, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

39 Yrs +20.3 yrs vs City Avg

City Avg: 18.7 Yrs

State Avg: 27.4 Yrs

Regional Practice Density

508 Specialists

Practicing in San Francisco, CA (7879 Statewide)

Telehealth Adoption Rate

2.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

36.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Brook (39 Years) 39 Yrs

San Francisco Specialty Average (18.7 Years) 18.7 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
64635 Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint	35	23	$315.00	$186.51
64636 Destruction of lower or sacral spinal facet joint nerves with imaging guidance	34	22	$90.00	$55.75
64494 Injection of lower or sacral spine facet joint using imaging guidance, second level	17	13	$108.09	$71.62
64493 Injection of lower or sacral spine facet joint using imaging guidance, single level	17	13	$216.18	$129.83
64483 Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level	15	13	$170.00	$125.83

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
64635 Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint	32	22	$315.00	$186.38
64636 Destruction of lower or sacral spinal facet joint nerves with imaging guidance	31	22	$90.00	$59.54
27096 Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance	28	24	$187.50	$103.97
64493 Injection of lower or sacral spine facet joint using imaging guidance, single level	25	17	$213.00	$126.76
64494 Injection of lower or sacral spine facet joint using imaging guidance, second level	22	16	$105.68	$70.37
64483 Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level	21	21	$160.71	$120.96
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	11	11	$1099.09	$305.64

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36620 Insertion of artery tube for blood sampling or infusion through skin	15	15	$225.00	$44.60
01992 Anesthesia for nerve block and injection procedure, prone position	15	14	$492.00	$141.07
01938 Anesthesia for injection, drainage or aspiration procedures on spine or spinal cord of lower back accessed through skin using imaging guidance	13	13	$421.73	$122.46
01402 Anesthesia for procedure for total knee joint replacement	11	11	$1333.64	$384.28

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	27	26	$1102.67	$165.54
00811 Anesthesia for procedure on large bowel using an endoscope	26	25	$1070.50	$161.29
36620 Insertion of artery tube for blood sampling or infusion through skin	20	20	$379.00	$46.74
00812 Anesthesia for exam of colon using an endoscope	19	19	$756.68	$114.20
00813 Anesthesia for procedure on small and large bowel using an endoscope	14	14	$1256.43	$189.16
01402 Anesthesia for procedure for total knee joint replacement	13	13	$1825.38	$364.54
00142 Anesthesia for lens surgery	12	12	$963.75	$144.91
00400 Anesthesia for procedure on skin of arms, legs, or trunk	12	12	$1212.50	$181.72
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	12	12	$2426.88	$375.68
01844 Anesthesia for placement or revision of blood flow shunt	12	12	$1980.63	$306.40

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36620 Insertion of artery tube for blood sampling or infusion through skin	25	25	$303.00	$47.17
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	13	12	$1751.77	$422.82

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	146	92	$250.00	$112.28
99213 Established patient office or other outpatient visit, typically 15 minutes	67	66	$172.00	$77.36
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	43	43	$372.00	$170.14
62323 Injection of substance into lower spine canal using imaging guidance	23	21	$633.83	$103.03
64483 Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level	14	13	$316.43	$141.45

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	530	220	$249.24	$109.17
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	208	208	$367.02	$164.39
62323 Injection of substance into lower spine canal using imaging guidance	37	31	$278.00	$102.12
64483 Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level	31	29	$570.61	$144.02
64493 Injection of lower or sacral spine facet joint using imaging guidance, single level	20	20	$471.00	$121.86
64494 Injection of lower or sacral spine facet joint using imaging guidance, second level	16	16	$249.69	$69.90
64635 Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint	16	12	$1164.25	$230.03
64636 Destruction of lower or sacral spinal facet joint nerves with imaging guidance	15	11	$500.67	$61.20
90791 Psychiatric diagnostic evaluation	14	14	$333.00	$136.46
99213 Established patient office or other outpatient visit, typically 15 minutes	13	12	$165.00	$75.44

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	576	214	$249.00	$110.71
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	178	178	$367.00	$167.81
62323 Injection of substance into lower spine canal using imaging guidance	46	36	$278.00	$101.16
64483 Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level	34	30	$621.65	$147.75
62321 Injection of substance into middle or upper spine canal using imaging guidance	22	19	$315.00	$109.36
20610 Aspiration and/or injection of fluid from large joint	15	13	$141.00	$64.16
99213 Established patient office or other outpatient visit, typically 15 minutes	14	13	$165.00	$75.57
64493 Injection of lower or sacral spine facet joint using imaging guidance, single level	13	12	$611.54	$137.34

Medical Specialties & State Licenses

CMS Verified: 2025-06-03

Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

State License CA G63429

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.

Anesthesiology - Pain Medicine

NUCC Taxonomy Code: 207LP2900X

State License CA G63429

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.

Pain Medicine - Pain Medicine

NUCC Taxonomy Code: 208VP0000X

State License CA G63429

Pain Medicine is a primary medical specialty based on a distinct body of knowledge and a well-defined scope of clinical practice that is founded on science, research and education. It is concerned with the study of pain, the prevention of pain, and the evaluation, treatment, and rehabilitation of persons in pain. A comprehensive evaluation incorporates the physical, psychological, cognitive and socio-cultural contributions to pain. The treatment protocol may include pharmacological, invasive, behavioral, cognitive, rehabilitative and complementary strategies provided in a concurrent focused and patient specific manner. The pain medicine physician often serves the patient as a frontline physician regarding their pain, but also may serve as a consultant to other physicians, direct an interdisciplinary/multidisciplinary treatment team, conduct research, or advocate for the patient's pain care with public and private agencies. The Pain Medicine physician may work in variety of settings including office, clinic, hospital, university, or governmental/public agencies.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

GR0042170 (CA)

Hospital & Practice Group Affiliations

Comfort Anesthesia Associates Inc

115 Mall Dr, Hanford, CA 932305786

Phone: 5595829000

University Anesthesia Medical Group

505 Parnassus Ave, San Francisco, CA 941432204

Phone: 4154761000

Northstar Anesthesia Of Virginia, Llc

4320 Seminary Rd, Alexandria, VA 223041535

Phone: 7035043000

Northstar Anesthesia Of Virginia, Llc

2501 Parkers Ln, Alexandria, VA 223063209

Phone: 7036647000

Secondary Practice Locations

470 Greenfield Ave, Suite 303

Hanford, CA 932303576

Phone: 5595370325

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners

Dr. Monique King , MD

Anesthesiology

NPI 1033144274

Doctor of Medicine (M.D.)

Dr. Marc Bozych , DO

Anesthesiology - Pediatric Anesthesiology

NPI 1033616941

Doctor of Osteopathic Medicine (D.O.)

Dr. Matthieu Legrand , MD, PhD

Anesthesiology - Critical Care Medicine

NPI 1033752365

Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)

Dr. Julin Tang , MD

Anesthesiology

NPI 1043278369

Doctor of Medicine (M.D.)

Dr. Gerard Dang , MD

Anesthesiology

NPI 1043389596

Doctor of Medicine (M.D.)

Alexa Mae Sangalang

Anesthesiology

NPI 1073193496

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events

📍

Updated Practice Location June 03, 2025

Registered at 521 PARNASSUS AVE FL 4, SAN FRANCISCO, CA 941432206 (Tel: 4154769035)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 03, 2025

Anesthesiology (License #G63429 in CA)

✅

NPI Profile Active August 19, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location August 19, 2016

Registered at 470 GREENFIELD AVE, SUITE 303, HANFORD, CA 932303576 (Tel: 5595370325)

📍

Updated Business Mailing Address August 19, 2016

Registered at 470 GREENFIELD AVE, SUITE 305, HANFORD, CA 932303576 (Tel: 5595370325)

👤

Provider Name / Credentials Updated August 19, 2016

Recorded as MICHAEL BROOK, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 19, 2016

Anesthesiology (License #G63429 in CA)

🟢

Initial NPI Registration & Enumeration July 03, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1255361838

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: July 03, 2006

Last Update: June 03, 2025

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

470 Greenfield Ave, Suite 305

Hanford, CA 932303576

Phone: 5595370325

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.