1. Home
  2. Directory
  3. Arizona
  4. Show Low
  5. Internal Medicine
  6. NPI Profile

DR. DENNIS ANDREW BUCK DO
NPI 1114157195
Internal Medicine - Hematology & Oncology in Show Low, AZ

Active since July 23, 2009PECOS Enrolled
85.4/100
CMS Quality Rating
2500 E HUNT DR STE H-J, SHOW LOW, AZ 85901(928) 537-6937(928) 532-8798 Get Directions Write a Review

NPPES record last updated: October 8, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 8, 2025, Mar 1, 2021, Sep 11, 2019 (3 updates tracked since 2019).

About Dr. Dennis Andrew Buck Do NPPES

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

DR. DENNIS ANDREW BUCK DO (NPI 1114157195) is an individual hematology & oncology provider in Show Low, Arizona, licensed in Arizona (011954) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS, is affiliated with Centracare- Rice Memorial Hospital, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1114157195
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. DENNIS ANDREW BUCKCredential: DO
Location Address2500 E HUNT DR STE H-JShow Low, AZ 85901-7954
Mailing Address2500 E Hunt Dr Ste H-jShow Low, AZ 85901-7954 · (928) 537-6937 · Fax (928) 532-8798
Phone(928) 537-6937
Fax(928) 532-8798
Sole ProprietorNo
Medical School CMSTouro Un College Of Osteopathic Medicine, VallejoGraduated 2009
Enumeration DateJuly 23, 2009
Last NPPES UpdateOctober 8, 20253 updates tracked since enumeration
NPPES CertifiedOctober 8, 2025
✔ NPI 1114157195 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in AZ · 011954
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal MedicineTaxonomy 207R00000X · License SL0646 (NV)
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License 5355 (OK)
2500 E HUNT DR STE H-J, Show Low, AZ 85901
Open in Google Maps ↗

Secondary Practice Locations 3

Location 110109 E. 79th StreetTulsa, OK 74133 · Phone (918) 286-5000 · Fax (918) 249-7532
Location 21 Mercado St Ste 100Durango, CO 81301 · Phone (970) 385-7977 · Fax (970) 385-6727
Location 395 S Pagosa BlvdPagosa Springs, CO 81147-8329 · Phone (970) 731-3700 · Fax (970) 731-3707

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Blue Cross Blue Shield of Arizona 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 (PECOS)

Dr. Dennis Andrew Buck Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3971745233
PECOS Enrollment IDI20240723001702, I20251118004116
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

2

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

Summit Healthcare Association
0.1 mi
Oncology
2500 E HUNT DR STE H-J
Show Low, AZ 85901
  • Reassigned Medicare billing, Arizona enrollment
  • 104 clinicians in this Medicare group
NPI 1083736128 (928) 537-6937
Carris Health LLC
1,094 mi
Emergency Medicine
301 BECKER AVE SW
Willmar, MN 56201
  • Reassigned Medicare billing, Minnesota enrollment
  • 179 clinicians in this Medicare group
NPI 1134632680 (320) 235-4543

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 3

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.

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.
102 services70 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.
24 services21 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.
12 services12 patients

Hospital Affiliations CMS Care Compare 4

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

Centracare- Rice Memorial Hospital

Acute Care Hospitals · Willmar, MN
4/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number240088
Location301 Becker Ave SWWillmar, MN 56201 · Kandiyohi County
Emergency services Birthing friendly

Chippewa County Hospital

Critical Access Hospitals · Montevideo, MN
OwnershipGovernment - Local
CMS Certification Number241325
Location824 North 11th StreetMontevideo, MN 56265 · Chippewa County
Emergency services

Meeker Memorial Hospital

Critical Access Hospitals · Litchfield, MN
OwnershipGovernment - Local
CMS Certification Number241366
Location612 South Sibley AvenueLitchfield, MN 55355 · Meeker County
Emergency services

Madison Hospital

Critical Access Hospitals · Madison, MN
OwnershipVoluntary non-profit - Private
CMS Certification Number241372
Location820 Third AvenueMadison, MN 56256 · Lac Qui Parle County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85901 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
$168.60 typical visit price
range $55.44 – $168.60
Typical copayment $42.15 (range $13.86 – $42.15)
Most-billed visit code 99205
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
Most-billed visit code 99214
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.

85.4/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality74.01
Promoting Interoperability99
Improvement Activities40

Other Providers at the Same Location NPPES 5

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

JEFFREY PEACOCK
Radiology (Radiation Oncology)
2500 E HUNT DR STE H-J
SHOW LOW, AZ 85901
Navajo County (928) 537-6937
MAUREEN MARY WALLACE PA-C
Physician Assistant (Medical)
2500 E HUNT DR STE H-J
SHOW LOW, AZ 85901
Navajo County (928) 537-6937
SUMMIT HEALTHCARE ASSOCIATION
Clinic/Center (Oncology)
2500 E HUNT DR STE H-J
SHOW LOW, AZ 85901
Navajo County (928) 537-6937
DR. SALMAN MALAD MD
Internal Medicine (Medical Oncology)
2500 E HUNT DR STE H-J
SHOW LOW, AZ 85901
Navajo County (928) 537-6937
MARILYN P KING FNP
Nurse Practitioner
2500 E HUNT DR STE H-J
SHOW LOW, AZ 85901
Navajo County (928) 537-6937

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 Dennis Buck's NPI number?

The NPI number for Dennis Buck is 1114157195. It was assigned to this individual provider in the NPPES registry on July 23, 2009.

Where is Dennis Buck located?

Dennis Buck practices at 2500 E Hunt Dr Ste H-J, Show Low, AZ 85901. The listed phone number is (928) 537-6937.

What is Dennis Buck's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Dennis Buck enrolled in Medicare?

Yes. Dennis Buck is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Dennis Buck's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dennis Buck reassigns Medicare benefits to 2 organizations: Summit Healthcare Association (Show Low, AZ) and Carris Health LLC (Willmar, MN). 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 Dennis Buck's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Dennis Buck accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc and HealthPartners and 1 other insurer list Dennis Buck 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 Dennis Buck affiliated with any hospitals?

According to CMS data, Dennis Buck is affiliated with Centracare- Rice Memorial Hospital, Chippewa County Hospital, Meeker Memorial Hospital and Madison Hospital.

When was this NPI record last updated?

The NPPES record for Dennis Buck was last updated on October 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.