DR. MARK DINSMORE MCALLISTER MD
NPI 1346341682
Radiology - Diagnostic Radiology in Reno, NV

Q: What is Mark Mcallister's NPI number?

The NPI number for Mark Mcallister is 1346341682. It was assigned to this individual provider in the NPPES registry on September 26, 2006.

Q: Where is Mark Mcallister located?

Mark Mcallister practices at 645 N Arlington Ave Suite 250A, Reno, NV 89503. The listed phone number is (775) 329-7707.

Q: What is Mark Mcallister's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: Is Mark Mcallister enrolled in Medicare?

Yes. Mark Mcallister 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.

Q: Which organization bills Medicare for Mark Mcallister's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Mcallister reassigns Medicare benefits to Saint Marys Medical Group Inc. (Reno, NV). 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 Mark Mcallister's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Q: Is Mark Mcallister affiliated with any hospitals?

According to CMS data, Mark Mcallister is affiliated with Saint Mary's Regional Medical Center.

Q: When was this NPI record last updated?

The NPPES record for Mark Mcallister was last updated on May 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 September 26, 2006PECOS EnrolledAccepts Medicare Assignment

91.59/100

CMS Quality Rating

645 N ARLINGTON AVE, SUITE 250A, RENO, NV 89503(775) 329-7707(775) 329-7767 Get Directions Write a Review

NPPES record last updated: May 15, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Mark Dinsmore Mcallister Md NPPES

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

DR. MARK DINSMORE MCALLISTER MD (NPI 1346341682) is an individual diagnostic radiology provider in Reno, Nevada, licensed in Nevada (5989) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Saint Mary's Regional Medical Center, and is a graduate of State University Of Ny Upstate Medical University (1982).

NPPES Registry Identity

NPI1346341682

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. MARK DINSMORE MCALLISTERCredential: MD

Location Address645 N ARLINGTON AVE, SUITE 250AReno, NV 89503-4505

Mailing AddressPo Box 21568, Dept 284Tulsa, OK 74121-1568 · (800) 915-3089

Phone(775) 329-7707

Fax(775) 329-7767

Sole ProprietorNo

Medical School CMSState University Of Ny Upstate Medical UniversityGraduated 1982

Enumeration DateSeptember 26, 2006

Last NPPES UpdateMay 15, 2026

NPPES CertifiedMay 15, 2026

✔ NPI 1346341682 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in NV · 5989

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

645 N ARLINGTON AVE, Reno, NV 89503

Open in Google Maps ↗

Other Identifiers 1

Medicaid201630NV

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. Mark Dinsmore Mcallister 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 ID1456434497

PECOS Enrollment IDI20120120000884

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

Saint Marys Medical Group Inc.

Same address

Primary Care

411 W 6TH ST
Reno, NV 89503

Reassigned Medicare billing, Nevada enrollment
58 clinicians in this Medicare group

NPI 1538424239 (775) 770-7600

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 19

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.

X-ray of chest, 1 view 71045

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

360 services242 patients

Ct scan head or brain without contrast 70450

A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.

74 services70 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

47 services41 patients

Ct scan of abdomen and pelvis with contrast 74177

A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.

34 services34 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

29 services16 patients

Ct scan of blood vessels of chest with contrast 71275

A CT scan of the chest with contrast is a non-invasive imaging test. It uses X-rays and a special dye to get detailed images of your blood vessels in the chest. This helps in diagnosing conditions related to heart and lungs.

26 services26 patients

Ct scan of chest without contrast 71250

A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.

22 services21 patients

Mri scan of brain without contrast 70551

An MRI scan of the brain without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your brain. It helps in detecting abnormalities like tumors, stroke, inflammation, or infection.

20 services20 patients

Mri scan of brain before and after contrast 70553

An MRI scan of the brain, both before and after contrast, helps visualize different brain structures. Initially, images are taken without a contrast agent. Then, a safe dye is injected which helps highlight certain areas, providing clearer, more detailed images.

20 services20 patients

Ct scan of abdomen and pelvis without contrast 74176

A CT scan of the abdomen and pelvis is a non-invasive medical test. It uses special X-ray equipment to create detailed images of your abdominal and pelvic areas. This helps doctors examine organs, tissues, and vessels. No contrast dye is used in this procedure.

18 services17 patients

X-ray of chest, 2 views 71046

17 services17 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

17 services17 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

17 services17 patients

Complete ultrasound scan of abdomen 76700

A complete ultrasound scan of the abdomen is a non-invasive imaging procedure. It uses sound waves to produce images of the organs in your abdomen, such as the liver, gallbladder, spleen, pancreas, and kidneys. It helps in diagnosing, monitoring, and planning treatments.

15 services15 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

13 services12 patients

Ct scan of blood vessels of head with contrast 70496

A CT scan of the head's blood vessels with contrast is a diagnostic procedure. A special dye (contrast) is injected into your body to make the blood vessels visible on the scan. This helps identify issues like blockages or abnormalities in your head's blood vessels.

12 services12 patients

Ct scan of upper spine without contrast 72125

A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.

12 services12 patients

Complete ultrasound scan behind abdominal cavity 76770

A complete ultrasound scan behind the abdominal cavity is a non-invasive imaging procedure. It uses sound waves to create pictures of the structures and organs located at the back of your abdomen. It helps in diagnosing health conditions and monitoring ongoing treatments.

12 services12 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Saint Mary's Regional Medical Center

Acute Care Hospitals · Reno, NV

3/5 CMS rating

OwnershipProprietary

CMS Certification Number290009

Location235 W 6th StReno, NV 89503 · Washoe County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 89503 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

$88.51 typical visit price

range $57.07 – $173.24

Typical copayment $22.12 (range $14.26 – $43.31)

Most-billed visit code 99203

Established Patient

$71.14 typical visit price

range $18.27 – $140.96

Typical copayment $17.78 (range $4.56 – $35.24)

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.

91.59/100

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

Scored through an Alternative Payment Model

Quality

85.05

Promoting Interoperability

96.88

Improvement Activities

Reported Quality Measures

Appropriate Follow-up Imaging for Incidental Abdominal Lesions

Percentage of final reports for abdominal imaging studies for asymptomatic patients aged 18 years and older with one or more of the following noted incidentally with follow_up imaging recommended: - Liver lesion =< 0.5 cm - Cystic kidney lesion < 1.0 cm -…

Lower rates are better for this measure.

0%22 patients

Prevention of Central Venous Catheter (CVC) - Related Bloodstream Infections

Percentage of patients, regardless of age, who undergo central venous catheter (CVC) insertion for whom CVC was inserted with all elements of maximal sterile barrier technique, hand hygiene, skin preparation and, if ultrasound is used, sterile ultrasound…

100%77 patients

Radiation Consideration for Adult CT: Utilization of Dose Lowering Techniques

Percentage of final reports for patients aged 18 years and older undergoing CT with documentation that one or more of the following dose reduction techniques were used: - Automated exposure control - Adjustment of the mA and/or kV according to patient size -…

100%628 patients

Radiology: Stenosis Measurement in Carotid Imaging Reports

Percentage of final reports for carotid imaging studies (neck magnetic resonance angiography [MRA], neck computed tomography angiography [CTA], neck duplex ultrasound, carotid angiogram) performed that include direct or indirect reference to measurements of…

100%39 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

DONALD CASSIDY MD

Internal Medicine

645 N ARLINGTON AVE, SUITE 555
RENO, NV 89503

Washoe County (775) 770-3304

HOLLY OMAR M.D.

Obstetrics & Gynecology

645 N ARLINGTON AVE, STE 400
RENO, NV 89503

Washoe County (775) 329-6241

LARRY KLAICH M.D.

Obstetrics & Gynecology

645 N ARLINGTON AVE, STE 400
RENO, NV 89503

Washoe County (775) 329-6241

WENDY L. FERRETTO APN

Nurse Practitioner (Family)

645 N ARLINGTON AVE, #460
RENO, NV 89503

Washoe County (775) 770-7403

STANTON HOLCOMB ALLEN M.D.

Obstetrics & Gynecology (Gynecology)

645 N ARLINGTON AVE, SUITE 400
RENO, NV 89503

Washoe County (775) 329-6241

RADIOLOGY CONSULTANTS, LTD.

Radiology (Diagnostic Radiology)

645 N ARLINGTON AVE, SUITE 250A
RENO, NV 89503

Washoe County (317) 614-9882

JOSHUA KREISS M.D.

Psychiatry & Neurology (Neurology)

645 N ARLINGTON AVE, STE 655
RENO, NV 89503

Washoe County (775) 770-6456

PETER B DEKAY MD LLC

Obstetrics & Gynecology

645 N ARLINGTON AVE, STE 340
RENO, NV 89503

Washoe County (775) 827-0777

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 Mark Mcallister's NPI number?

The NPI number for Mark Mcallister is 1346341682. It was assigned to this individual provider in the NPPES registry on September 26, 2006.

Where is Mark Mcallister located?

Mark Mcallister practices at 645 N Arlington Ave Suite 250A, Reno, NV 89503. The listed phone number is (775) 329-7707.

What is Mark Mcallister's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Mark Mcallister enrolled in Medicare?

Yes. Mark Mcallister 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 organization bills Medicare for Mark Mcallister's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Mcallister reassigns Medicare benefits to Saint Marys Medical Group Inc. (Reno, NV). 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 Mark Mcallister's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Mark Mcallister affiliated with any hospitals?

According to CMS data, Mark Mcallister is affiliated with Saint Mary's Regional Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Mcallister was last updated on May 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.