DR. GREGORY RICCARDO VLACICH MD
NPI 1073839148
Radiology - Radiation Oncology in Saint Louis, MO

Q: What is Gregory Vlacich's NPI number?

The NPI number for Gregory Vlacich is 1073839148. It was assigned to this individual provider in the NPPES registry on April 14, 2010.

Q: What is Gregory Vlacich'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 Gregory Vlacich was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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 April 14, 2010PECOS EnrolledAccepts Medicare Assignment

92.39/100

CMS Quality Rating

4921 PARKVIEW PL, DEPT RADIATION ONCOLOGY, LL, SAINT LOUIS, MO 63110(314) 747-7236(314) 362-8099 Get Directions Write a Review

NPPES record last updated: April 17, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 18, 2024, Apr 25, 2024, Apr 10, 2024 and 5 more (8 updates tracked since 2016).

On this page

About Dr. Gregory Riccardo Vlacich Md NPPES

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

DR. GREGORY RICCARDO VLACICH MD (NPI 1073839148) is an individual radiation oncology provider in Saint Louis, Missouri, licensed in Missouri (2016004564) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS, is affiliated with Alton Memorial Hospital, and is a graduate of Other (2009).

NPPES Registry Identity

NPI1073839148

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameDR. GREGORY RICCARDO VLACICHCredential: MD

Location Address4921 PARKVIEW PL, DEPT RADIATION ONCOLOGY, LLSaint Louis, MO 63110-1032

Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 747-7236 · Fax (314) 362-8099

Phone(314) 747-7236

Fax(314) 362-8099

Sole ProprietorNo

Medical School CMSOtherGraduated 2009

Enumeration DateApril 14, 2010

Last NPPES UpdateApril 17, 20258 updates tracked since enumeration

✔ NPI 1073839148 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 MO · 2016004564

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.

4921 PARKVIEW PL, Saint Louis, MO 63110

Open in Google Maps ↗

Other Identifiers 1

Medicaid200033688MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cox HealthPlans, UnitedHealthcare.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

Dr. Gregory Riccardo Vlacich Md 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 ID4486878048

PECOS Enrollment IDI20160318000771, I20160706000474

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 Gregory Vlacich reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Washington University Physicians In Illinois, Inc

0.1 mi

Multi-Specialty

4901 FOREST PARK AVE STE 341
Saint Louis, MO 63108

Reassigned Medicare billing, Illinois enrollment
530 clinicians in this Medicare group

NPI 1457203135 (314) 454-8181

Washington University

0.3 mi

Multi-Specialty

660 S EUCLID AVE
Saint Louis, MO 63110

Reassigned Medicare billing, Missouri enrollment
45 clinicians in this Medicare group

NPI 1316987886 (314) 362-8542

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 17

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.

443 services47 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.

199 services54 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.

124 services55 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.

116 services50 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.

89 services57 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.

54 services52 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.

46 services11 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.

44 services42 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.

42 services42 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

39 services39 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.

31 services31 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.

20 services20 patients

Management of cranial lesion surgery using radiation over multiple sessions 77435

This procedure involves using targeted radiation to treat a lesion in the brain over several sessions. The radiation destroys the abnormal cells, helping to control or eliminate the lesion. It's a non-invasive treatment, meaning no surgical cuts are made.

19 services19 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.

19 services17 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.

16 services16 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.

16 services15 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.

15 services13 patients

Hospital Affiliations CMS Care Compare 5

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

Alton Memorial Hospital

Acute Care Hospitals · Alton, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140002

LocationOne Memorial DriveAlton, IL 62002 · Madison County

Emergency services Birthing friendly

Memorial Hospital

Acute Care Hospitals · Belleville, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140185

Location4500 Memorial DriveBelleville, IL 62226 · St. Clair County

Emergency services Birthing friendly

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number260032

LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County

Emergency services Birthing friendly

Christian Hospital Northeast

Acute Care Hospitals · Saint Louis, MO

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260180

Location11133 Dunn RoadSaint Louis, MO 63136 · St. Louis County

Emergency services

Barnes-Jewish St Peters Hospital

Acute Care Hospitals · Saint Peters, MO

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number260191

Location10 Hospital DrSaint Peters, MO 63376 · St. Charles County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63110 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

$169.38 typical visit price

range $55.65 – $169.38

Typical copayment $42.34 (range $13.91 – $42.34)

Most-billed visit code 99205

Established Patient

$69.50 typical visit price

range $17.76 – $137.92

Typical copayment $17.37 (range $4.44 – $34.48)

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.

92.39/100

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

Scored as part of a group practice

Quality

97.81

Promoting Interoperability

100

Improvement Activities

Cost

70.26

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.

DR. CHARLES PHILLIPS JONES MD

Urology

4921 PARKVIEW PL, DIV SURG UROLOGY, STE 11C
SAINT LOUIS, MO 63110

St. Louis City (314) 362-8200

DR. PRABHA RANGANATHAN MD

Internal Medicine (Rheumatology)

4921 PARKVIEW PL, DIV IM RHEUMATOLOGY, STE 5C
SAINT LOUIS, MO 63110

St. Louis City (314) 286-2635

DR. RALPH GERARD DACEY JR. MD

Neurological Surgery

4921 PARKVIEW PL, DEPT NEUROLOGICAL SURGERY, STE 6B/6C
SAINT LOUIS, MO 63110

St. Louis City (314) 362-3577

DR. KRASIMIRA MIKHAILOVA MIKHOVA MD

Internal Medicine (Clinical Cardiac Electrophysiology)

4921 PARKVIEW PL, DIV IM CARDIOLOGY, STE 8B
SAINT LOUIS, MO 63110

St. Louis City (314) 362-1291

DR. JEE YOUNG HAN MD

Psychiatry & Neurology (Neurology)

4921 PARKVIEW PL, DIV NEUROLOGY AGING AND DEMENTIA, STE 6C
SAINT LOUIS, MO 63110

St. Louis City (314) 362-1408

MS. MAREN JORGENSEN OT

Occupational Therapist

4921 PARKVIEW PL, DEPT OCCUPATIONAL THERAPY, STE 6F
SAINT LOUIS, MO 63110

St. Louis City (314) 286-1669

DR. ADRIAN SHIFREN MD

Internal Medicine (Pulmonary Disease)

4921 PARKVIEW PL, DIV IM PULMONARY AND CCM, 8TH FL
SAINT LOUIS, MO 63110

St. Louis City (314) 454-8917

DR. MYRA L RUBIO MD

Internal Medicine

4921 PARKVIEW PL, STE 5A
SAINT LOUIS, MO 63110

St. Louis City (314) 747-5900

DR. PETER G TUTEUR MD

Internal Medicine (Pulmonary Disease)

4921 PARKVIEW PL, 8TH FLOOR
SAINT LOUIS, MO 63110

St. Louis City (314) 454-8917

DR. RAMASWAMY GOVINDAN MD

Internal Medicine (Medical Oncology)

4921 PARKVIEW PL, DIV IM MEDICAL ONCOLOGY, STE 7A, 7B, 7C
SAINT LOUIS, MO 63110

St. Louis City (800) 647-2098

DR. CAROLYN KAY MCCOURT MD

Obstetrics & Gynecology (Gynecologic Oncology)

4921 PARKVIEW PL, DIV OBGYN GYNECOLOGIC ONCOLOGY, STE 13C
SAINT LOUIS, MO 63110

St. Louis City (314) 362-3181

DR. ADEL BASSAM TABCHY MD

Internal Medicine (Medical Oncology)

4921 PARKVIEW PL, 7TH FLOOR
SAINT LOUIS, MO 63110

St. Louis City (314) 747-1171

DR. BRIAN ADAMS KELLY MD

Orthopaedic Surgery (Pediatric Orthopaedic Surgery)

4921 PARKVIEW PL, DEPT ORTHOPAEDIC SURGERY, STE 6A/6B/12A
SAINT LOUIS, MO 63110

St. Louis City (314) 514-3500

DR. NICHOLAS ANDREW PALLOTTA MD

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)

4921 PARKVIEW PL, DEPT ORTHOPAEDIC SURGERY, STE 6A/6B/12A
SAINT LOUIS, MO 63110

St. Louis City (314) 514-3500

MS. LORNA C KAHN PT

Physical Therapist

4921 PARKVIEW PL, DEPT PHYSICAL THERAPY, STE 6F
SAINT LOUIS, MO 63110

St. Louis City (314) 286-1940

MS. BRENDA G GOTTER AUD

Audiologist

4921 PARKVIEW PL, DEPT OTOLARYNGOLOGY, STE 11A
SAINT LOUIS, MO 63110

St. Louis City (314) 362-7509

DR. KAN LIU MD

Internal Medicine (Cardiovascular Disease)

4921 PARKVIEW PL, DIV IM CARDIOLOGY, STE 8B
SAINT LOUIS, MO 63110

St. Louis City (314) 362-1291

DR. SINA A JASIM MD

Internal Medicine (Endocrinology, Diabetes & Metabolism)

4921 PARKVIEW PL, DIV IM ENDOCRINOLOGY, STE 5C
SAINT LOUIS, MO 63110

St. Louis City (314) 362-3500

MS. SUSAN ANNETTE WILLIAMS PA

Physician Assistant (Medical)

4921 PARKVIEW PL, DIV NEUROLOGY EPILEPSY, STE 6C
SAINT LOUIS, MO 63110

St. Louis City (314) 362-7845

MR. STEPHEN MATTHEW BROADDUS PA

Physician Assistant

4921 PARKVIEW PL, DEPT ORTHOPAEDIC SURGERY, STE 6A/6B/12A
SAINT LOUIS, MO 63110

St. Louis City (314) 514-3500

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 Gregory Vlacich's NPI number?

The NPI number for Gregory Vlacich is 1073839148. It was assigned to this individual provider in the NPPES registry on April 14, 2010.

Where is Gregory Vlacich located?

Gregory Vlacich practices at 4921 Parkview Pl Dept Radiation Oncology, Ll, Saint Louis, MO 63110. The listed phone number is (314) 747-7236.

What is Gregory Vlacich's specialty?

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

Is Gregory Vlacich enrolled in Medicare?

Yes. Gregory Vlacich 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 Gregory Vlacich's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Vlacich reassigns Medicare benefits to 2 organizations: Washington University Physicians In Illinois, Inc (Saint Louis, MO) and Washington University (Saint Louis, MO). 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 Gregory Vlacich's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Vlacich accept?

Health plans from Cox HealthPlans and UnitedHealthcare list Gregory Vlacich 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 Gregory Vlacich affiliated with any hospitals?

According to CMS data, Gregory Vlacich is affiliated with Alton Memorial Hospital, Memorial Hospital, Barnes Jewish Hospital, Christian Hospital Northeast and Barnes-Jewish St Peters Hospital.

When was this NPI record last updated?

The NPPES record for Gregory Vlacich was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.