GARY E OPPENHEIM M.D.
NPI 1083639249
Internal Medicine - Cardiovascular Disease in Seattle, WA

Q: What is Gary Oppenheim's NPI number?

The NPI number for Gary Oppenheim is 1083639249. It was assigned to this individual provider in the NPPES registry on July 12, 2006.

Q: What is Gary Oppenheim's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Gary Oppenheim was last updated on October 7, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since July 12, 2006PECOS Enrolled

80.13/100

CMS Quality Rating

550 17TH AVE, SUITE 450, SEATTLE, WA 98122(206) 861-8550(206) 861-8551 Get Directions Write a Review

NPPES record last updated: October 7, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Gary E Oppenheim M.d. NPPES

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

GARY E OPPENHEIM M.D. (NPI 1083639249) is an individual cardiovascular disease provider in Seattle, Washington, licensed in Washington (MD00027825) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1083639249

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameGARY E OPPENHEIMCredential: M.D.

Location Address550 17TH AVE, SUITE 450Seattle, WA 98122-5788

Mailing AddressPo Box 25608Salt Lake City, UT 84125-0608 · (206) 320-4476 · Fax (206) 568-7043

Phone(206) 861-8550

Fax(206) 861-8551

Sole ProprietorNo

Enumeration DateJuly 12, 2006

Last NPPES UpdateOctober 7, 2020

NPPES CertifiedOctober 7, 2020

✔ NPI 1083639249 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in WA · MD00027825

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

550 17TH AVE, Seattle, WA 98122

Open in Google Maps ↗

Secondary Practice Locations 2

Location 1751 NE Blakely Dr Ste 3020Issaquah, WA 98029-6201 · Phone (425) 313-7123 · Fax (425) 313-7177

Location 2515 Minor AveSeattle, WA 98104-2120 · Phone (206) 320-6500 · Fax (206) 320-6501

Other Identifiers 2

Other0194895WA · L & I

Medicaid8119877WA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gary E Oppenheim M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Gary Oppenheim reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Swedish Health Services

Same address

Cardiovascular Disease

550 17TH AVE FL 6
Seattle, WA 98122

Reassigned Medicare billing, Washington enrollment
76 clinicians in this Medicare group

NPI 1720029028 (206) 215-4545

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 14

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

482 services403 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

179 services171 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

171 services153 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

96 services96 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

71 services62 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

70 services60 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

58 services56 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

54 services28 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

24 services24 patients

Ultrasound of heart during rest, exercise and/or drug-induced stress with report 93350

This procedure involves using ultrasound imaging to view your heart at rest, during exercise, and/or under drug-induced stress. It helps assess how well your heart responds to exertion. A report of the findings is provided after the test.

24 services24 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

21 services21 patients

Ultrasound of heart blood flow, valves and chambers, follow-up 93321

This procedure, an echocardiogram, uses sound waves to create images of your heart. It aids in assessing your heart's blood flow, chambers, and valves. It's a follow-up procedure, ensuring that your heart is functioning properly post-treatment.

19 services19 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

17 services17 patients

Heart rhythm recording of continous external ekg over 8-15 days 93246

A heart rhythm recording is a non-invasive procedure where a small device, attached externally, monitors your heart's electrical activity for 8-15 days. It helps detect irregular heart rhythms, assess heart rate, and guide treatment decisions. It's safe, painless, and can be done during normal daily activities.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98122 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$143.76 typical visit price

range $63.67 – $189.37

Typical copayment $35.94 (range $15.91 – $47.34)

Most-billed visit code 99204

Established Patient

$78.74 typical visit price

range $21.12 – $155.00

Typical copayment $19.68 (range $5.28 – $38.75)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

80.13/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

81.12

Promoting Interoperability

100

Improvement Activities

Cost

52.64

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.

MRS. JOANNE LYNN OSETSKY ARNP

Nurse Practitioner

550 17TH AVE, STE 110
SEATTLE, WA 98122

King County (206) 320-3470

MR. ANAND ASHOK GERSAPPE MD, PHD

Psychiatry & Neurology (Sleep Medicine)

550 17TH AVE
SEATTLE, WA 98122

King County (206) 386-4744

LIEN B NGUYEN DO

Psychiatry & Neurology (Neurology)

550 17TH AVE
SEATTLE, WA 98122

King County (206) 320-2800

MICHAEL J DOHERTY MD

Psychiatry & Neurology (Neurology)

550 17TH AVE, FIFTH FLOOR
SEATTLE, WA 98122

King County (206) 386-3880

SARAH E STOLZ MD

Psychiatry & Neurology (Sleep Medicine)

550 17TH AVE, STE A20
SEATTLE, WA 98122

King County (206) 386-4744

LISA M. CAYLOR MD

Psychiatry & Neurology (Neurology)

550 17TH AVE, FIFTH FLOOR
SEATTLE, WA 98122

King County (206) 386-3880

SWEDISH HEALTH SERVICES

Clinic/Center (Sleep Disorder Diagnostic)

550 17TH AVE, STE A20
SEATTLE, WA 98122

King County (206) 386-4744

DR. JOHN K HSIANG MD

Neurological Surgery

550 17TH AVE, STE 500
SEATTLE, WA 98122

King County (206) 320-2800

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 Gary Oppenheim's NPI number?

The NPI number for Gary Oppenheim is 1083639249. It was assigned to this individual provider in the NPPES registry on July 12, 2006.

Where is Gary Oppenheim located?

Gary Oppenheim practices at 550 17th Ave Suite 450, Seattle, WA 98122. The listed phone number is (206) 861-8550.

What is Gary Oppenheim's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Gary Oppenheim enrolled in Medicare?

Yes. Gary Oppenheim is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gary Oppenheim's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Oppenheim reassigns Medicare benefits to Swedish Health Services (Seattle, WA). 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 Gary Oppenheim'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 Gary Oppenheim was last updated on October 7, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.