GARY L LARSON M.D.
NPI 1578599304
Radiology - Radiation Oncology in Oklahoma City, OK

Q: What is Gary Larson's NPI number?

The NPI number for Gary Larson is 1578599304. It was assigned to this individual provider in the NPPES registry on June 23, 2006.

Q: What is Gary Larson's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Q: When was this NPI record last updated?

The NPPES record for Gary Larson was last updated on May 21, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 June 23, 2006PECOS EnrolledAccepts Medicare Assignment

88.82/100

CMS Quality Rating

5911 W MEMORIAL RD, OKLAHOMA CITY, OK 73142(405) 773-6530 Get Directions Write a Review

NPPES record last updated: May 21, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 14, 2023, Mar 29, 2023 (2 updates tracked since 2023).

On this page

About Gary L Larson M.d. NPPES

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

GARY L LARSON M.D. (NPI 1578599304) is an individual radiation oncology provider in Oklahoma City, Oklahoma, licensed in Oklahoma (13856) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Integris Bass Baptist Health Center, and maintains a secondary practice location in Oklahoma City.

NPPES Registry Identity

NPI1578599304

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameGARY L LARSONCredential: M.D.

Location Address5911 W MEMORIAL RDOklahoma City, OK 73142-2015

Mailing AddressPo Box 248856Oklahoma City, OK 73124-8856 · (405) 607-4520 · Fax (405) 607-4525

Phone(405) 773-6530

Sole ProprietorNo

Medical School CMSUniversity Of Oklahoma College Of MedicineGraduated 1981

Enumeration DateJune 23, 2006

Last NPPES UpdateMay 21, 20242 updates tracked since enumeration

NPPES CertifiedMay 21, 2024

✔ NPI 1578599304 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

License✔ Licensed in OK · 13856

Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

5911 W MEMORIAL RD, Oklahoma City, OK 73142

Open in Google Maps ↗

Secondary Practice Location 1

Location 14401 S Western AveOklahoma City, OK 73109-3413 · Phone (405) 636-7342

Other Identifiers 2

Medicaid100088460AOK

Other300042703Railroad Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Oklahoma, CommunityCare, Mending Health and more.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

Gary L Larson 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 ID446281885

PECOS Enrollment IDI20050825000854

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

Medicare enrollment records show Gary Larson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Oklahoma Proton Center LLC

Same address

Oncology, Radiation

5901 W MEMORIAL RD
Oklahoma City, OK 73142

Reassigned Medicare billing, Oklahoma enrollment
28 clinicians in this Medicare group

NPI 1114408762 (918) 798-9160

Radiation Medicine Associates, P.C.

1.3 mi

Radiation Oncology

6006 NW 120TH CT
Oklahoma City, OK 73162

Reassigned Medicare billing, Oklahoma enrollment
6 clinicians in this Medicare group

NPI 1679631329 (405) 607-4520

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 18

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.

Ct guidance for insertion of radiation therapy fields 77014

CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.

623 services153 patients

Calculation of radiation therapy dose 77300

Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.

153 services40 patients

Design and construction of complex radiation treatment device 77334

The design and construction of a complex radiation treatment device is a process where a specialized instrument is created. This device targets harmful cells with high-energy rays to destroy or damage them, while minimizing impact on healthy cells. This aids in treating conditions like cancer.

148 services54 patients

Radiation treatment management, 5 treatment sessions 77427

Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.

132 services54 patients

Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy G6002

Stereoscopic x-ray guidance is a technique used in radiation therapy. It involves taking multiple X-ray images from different angles to create a 3D picture of the area to be treated. This helps accurately pinpoint the exact location for radiation delivery, ensuring the therapy is as effective as possible.

106 services35 patients

Intra-fraction localization and tracking of target or patient motion during delivery of radiation therapy (eg,3d positional tracking, gating, 3d surface tracking), each fraction of treatment G6017

In radiation therapy, intra-fraction localization and tracking monitor patient or target movement during treatment. This ensures that radiation is accurately delivered to the correct area. Techniques like 3D positional tracking, gating, and 3D surface tracking are used to enhance precision.

79 services27 patients

Complex radiation therapy planning 77263

Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.

41 services37 patients

Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 77290

This procedure involves collecting necessary data to plan the best radiation treatment. It may cover 3 or more areas or any area requiring special attention. Data collection includes imaging scans and tests to understand the disease's extent and to tailor a precise, effective treatment plan.

36 services35 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

32 services32 patients

Special radiation treatment 77470

Special radiation treatment is a medical procedure that uses high-energy rays to destroy or damage cancer cells. It's a targeted approach that aims to minimize harm to healthy tissues. The treatment duration varies based on individual health conditions.

26 services24 patients

3d radiation therapy planning 77295

3D radiation therapy planning is a procedure that uses computer imaging to map out the area needing treatment. This ensures the radiation targets the disease precisely, while minimizing exposure to surrounding healthy tissues. It's a key step in preparing for effective radiation therapy.

25 services22 patients

Obtaining data needed to develop the optimal radiation treatment, 1 treatment area 77280

This procedure involves gathering essential information to create the best radiation treatment plan for a specific area. It includes scanning the treatment area and using this data to calculate the precise dose of radiation needed to target the disease effectively, while sparing healthy tissue.

21 services21 patients

Design and construction of radiation treatment device for high precision radiation therapy 77338

A radiation treatment device is custom-made for each patient to target cancer cells with high precision. It's designed to focus radiation on the tumor, sparing healthy tissue. This process ensures effective therapy while minimizing side effects.

21 services16 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.

21 services16 patients

High precision radiation therapy planning 77301

High precision radiation therapy planning involves detailed mapping of your body to target cancer cells accurately. Advanced imaging techniques help identify the exact location of the tumor, minimizing harm to healthy tissues. This personalized approach enhances effectiveness and reduces side effects.

17 services15 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.

16 services14 patients

Obtaining respiratory data needed to develop the optimal radiation treatment 77293

Obtaining respiratory data is vital for optimal radiation treatment. This involves tracking your breathing patterns to ensure the precise delivery of radiation to the target area, minimizing damage to healthy tissue. It's a non-invasive process and contributes to effective treatment.

12 services11 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

11 services11 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Integris Bass Baptist Health Center

Acute Care Hospitals · Enid, OK

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number370016

Location600 South MonroeEnid, OK 73701 · Garfield County

Emergency services Birthing friendly

St Mary's Regional Medical Center

Acute Care Hospitals · Enid, OK

4/5 CMS rating

OwnershipProprietary

CMS Certification Number370026

Location305 South 5th StreetEnid, OK 73701 · Garfield County

Emergency services Birthing friendly

Integris Baptist Medical Center, Inc

Acute Care Hospitals · Oklahoma City, OK

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number370028

Location3300 Northwest ExpresswayOklahoma City, OK 73112 · Oklahoma County

Emergency services Birthing friendly

Integris Southwest Medical Center

Acute Care Hospitals · Oklahoma City, OK

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number370106

Location4401 South Western AvenueOklahoma City, OK 73109 · Oklahoma County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 73142 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

$162.61 typical visit price

range $53.00 – $162.61

Typical copayment $40.65 (range $13.25 – $40.65)

Most-billed visit code 99205

Established Patient

$66.48 typical visit price

range $16.68 – $132.40

Typical copayment $16.62 (range $4.17 – $33.10)

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.

88.82/100

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

Scored as part of a group practice

Quality

77.65

Improvement Activities

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

TYLER GUTSCHENRITTER MD

Radiology (Radiation Oncology)

5911 W MEMORIAL RD
OKLAHOMA CITY, OK 73142

Oklahoma County (405) 773-6530

KATIE BARFIELD COTA/L, CLT

Occupational Therapy Assistant

5911 W MEMORIAL RD
OKLAHOMA CITY, OK 73142

Oklahoma County (405) 773-6601

ROBERT C GASTON DO

Radiology (Radiation Oncology)

5911 W MEMORIAL RD
OKLAHOMA CITY, OK 73142

Oklahoma County (405) 773-6530

SENECA DEWBRE LAC

Acupuncturist

5911 W MEMORIAL RD, SUITE 100
OKLAHOMA CITY, OK 73142

Oklahoma County (405) 773-6605

DR. SHRIPAL KANTILAL BHAVSAR MD, MBA

Radiology (Radiation Oncology)

5911 W MEMORIAL RD
OKLAHOMA CITY, OK 73142

Oklahoma County (405) 773-6530

LAURINDA CRAWFORD

Dietitian, Registered

5911 W MEMORIAL RD
OKLAHOMA CITY, OK 73142

Oklahoma County (405) 301-1376

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 Larson's NPI number?

The NPI number for Gary Larson is 1578599304. It was assigned to this individual provider in the NPPES registry on June 23, 2006.

Where is Gary Larson located?

Gary Larson practices at 5911 W Memorial Rd, Oklahoma City, OK 73142. The listed phone number is (405) 773-6530.

What is Gary Larson's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Gary Larson enrolled in Medicare?

Yes. Gary Larson 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 Gary Larson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Larson reassigns Medicare benefits to 2 organizations: Oklahoma Proton Center LLC (Oklahoma City, OK) and Radiation Medicine Associates, P.C. (Oklahoma City, OK). 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 Gary Larson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gary Larson accept?

Health plans from Blue Cross and Blue Shield of Oklahoma, CommunityCare, Mending Health and UnitedHealthcare list Gary Larson 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.

Is Gary Larson affiliated with any hospitals?

According to CMS data, Gary Larson is affiliated with Integris Bass Baptist Health Center, St Mary's Regional Medical Center, Integris Baptist Medical Center, Inc and Integris Southwest Medical Center.

When was this NPI record last updated?

The NPPES record for Gary Larson was last updated on May 21, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.