Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Gregory Alexander Kogan , DO

Anesthesiology • Pasadena, CA

Active NPI 1831356708 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

2923 Bradley St
Pasadena, CA 911071502

Call 6267956596 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

2923 Bradley St

Pasadena, CA 911071502

Telephone 6267956596
Organization at the Same NPPES Address or Phone
Varner E. Dudley, Iii, M.d., Inc Facility NPI 1013067578

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Buena Vista Anesthesia Medical Group. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Western University Of Health Sciences College Of Dental Med

Graduation Year

2004

Medicare patients

179 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $12,176 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Paid by Medicare

About $9,250 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $19.51 in 2024

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2024.

Guide: How to read an Open Payments record

Years since graduation

22 years (graduated 2004)

CMS Doctors and Clinicians data list 2004 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2008

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Kogan has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Kogan as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Pasadena and California

Billing and prescribing volume is not a quality rating.

Medicare Part B services

Close to the middle for clinicians listed under Anesthesiology in Pasadena, CA (2024, 37 clinicians with data). Median for this group: 115. Middle half: 47 to 192.

Close to the middle for clinicians listed under Anesthesiology in California (2024, 3,362 clinicians with data). Median for this group: 98. Middle half: 43 to 196.

Medicare-allowed amount

Close to the middle for clinicians listed under Anesthesiology in Pasadena, CA (2024, 37 clinicians with data). Median for this group: $13,352. Middle half: $6,815 to $27,868.

Close to the middle for clinicians listed under Anesthesiology in California (2024, 3,362 clinicians with data). Median for this group: $14,888. Middle half: $6,161 to $30,571.

Paid by Medicare

Close to the middle for clinicians listed under Anesthesiology in Pasadena, CA (2024, 37 clinicians with data). Median for this group: $10,878. Middle half: $5,399 to $23,481.

Close to the middle for clinicians listed under Anesthesiology in California (2024, 3,362 clinicians with data). Median for this group: $11,899. Middle half: $4,899 to $24,300.

61 active clinicians are listed under Anesthesiology with a practice address in Pasadena, CA (7,574 in California).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Pasadena

0% of these 61 clinicians have the CMS telehealth indicator.

65.6% of these 61 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Open Payments (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2024
Disclosure Year:

Program year 2024 (payments made January 1 – December 31, 2024): fewer than 11 records totaling $19.51.

Manufacturer Payment Nature Product Type Amount ($)
Medtronic, Inc.
Food and Beverage
In-kind items and services
COREVALVE EVOLUT R General $19.51

Source: CMS Open Payments, program year 2024, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
36620 Insertion of artery tube for blood sampling or infusion through skin
24 24 $345.00 $44.23
00731 Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope
21 21 $815.95 $138.98
00840 Anesthesia for other procedure on lower abdomen
13 13 $1716.15 $304.61
36556 Insertion of non-tunneled central venous tube for infusion (5 years or older)
12 12 $460.00 $84.87
00811 Anesthesia for other procedure on large bowel using an endoscope
11 11 $763.18 $132.37
00813 Anesthesia for procedure on small and large bowel using an endoscope
11 11 $920.00 $160.17

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Specialties & License Numbers Reported to NPPES

Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

License # reported to NPPES CA 20A 9419

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Medical Board of California.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - ANESTHESIOLOGY

Medicare Enrollment ID

I20081114000332

Enrollment State Jurisdiction

CA

PECOS Control ID

0648330027

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Buena Vista Anesthesia Medical Group

501 S Buena Vista St, Burbank, CA 915054866

Phone: 8188435111

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

5 listed
Julia Berman

Physician Assistant

NPI 1780202473
Dr. David Blake , MD

Anesthesiology

NPI 1326054255

Doctor of Medicine (M.D.)

NPI 1710220777

Doctor of Medicine (M.D.)

Dr. Emil Saify , MD

Anesthesiology

NPI 1962459347

Doctor of Medicine (M.D.)

Dr. Samuel Shapiro , MD

Anesthesiology - Addiction Medicine

NPI 1760619936

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

11 Historical Events
âś…
NPI Profile Active August 07, 2017

NPI status registered as active in NPPES database

📍
Updated Practice Location August 07, 2017

Registered at 2923 BRADLEY ST, PASADENA, CA 911071502 (Tel: (626) 795-6596)

📍
Updated Business Mailing Address August 07, 2017

Registered at 2923 BRADLEY ST, PASADENA, CA 911071502 (Tel: (626) 795-6596)

👤
Provider Name / Credentials Updated August 07, 2017

Recorded as GREGORY KOGAN, D.O.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 07, 2017

Anesthesiology (license number reported to NPPES: CA 20A 9419)

âś…
NPI Profile Active November 09, 2009

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) November 09, 2009

Registered at 418 PIER AVE, APT 109, SANTA MONICA, CA 904055524 (Tel: 9092261725)

📍
Business Mailing Address (Initial Record) November 09, 2009

Registered at 418 PIER AVE, APT 109, SANTA MONICA, CA 904055524 (Tel: 9092261725)

👤
Provider Name / Credentials (Initial Record) November 09, 2009

Recorded as GREGORY KOGAN, D.O.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) November 09, 2009

Anesthesiology (license number reported to NPPES: CA 20A 9419)

🟢
Initial NPI Registration & Enumeration May 19, 2008

First registered as active Individual Practitioner in NPPES Database.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1831356708
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 19, 2008
Last Update: July 21, 2022
Sole Proprietor: No

Other Anesthesiology Specialists in Pasadena

All Anesthesiology Specialists in Pasadena

Mailing Address

2923 Bradley St

Pasadena, CA 911071502

Phone: 6267956596

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.