What is Randy Grellner's NPI number?

Randy Grellner's National Provider Identifier (NPI) is 1356364376, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Randy Grellner's specialty?

Randy Grellner is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Randy Grellner located?

Randy Grellner's practice location on file with NPPES is 1025 E 2nd St, Cushing, OK 74023-4136.

What is Randy Grellner's phone number?

The practice phone number listed in the NPPES registry for Randy Grellner is (918) 225-3627.

Does Randy Grellner accept Medicare?

Randy Grellner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Randy Grellner's NPI active?

Yes — Randy Grellner's NPI (1356364376) is active in the NPPES registry as of the last update on 2014-05-01.

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Randy Grellner, DO

NPI 1356364376 · Family Medicine Physician · Cushing, OK

Randy Grellner, DO is a Family Medicine Physician provider in Cushing, OK (NPI 1356364376).

Provider details

NPI number: 1356364376
Entity type: Individual
Primary specialty: Family Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: DO
Sex: Male
Sole proprietor: No
License: 3663 (OK)

Practice location

1025 E 2nd St

Cushing, OK 74023-4136

Phone: (918) 225-3627

Fax: (918) 225-1008

Street-level locationGet directions

More OK providers

Mailing address

1025 E 2nd St

Cushing, OK 74023-4136

Specialties & taxonomies

Family Medicine PhysicianPrimary207Q00000XLicense 3663 (OK)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(94/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
20 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
1 documented practice location
Medicare service volume (vs. specialty peers)25% of score
3,307 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	750	$123
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	726	$86
Injection of Drug Or Substance Under Skin Or Into Muscle96372	540	$14
Insertion of Needle Into Vein for Collection of Blood Sample36415	517	$9
Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439	174	$126
Hemoglobin A1c Level83036	158

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 199 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Levothyroxine Sodium	445	93
Atorvastatin Calcium	405	100
Pantoprazole Sodium	391	82
Gabapentin	312	68
Amlodipine Besylate	308	74
Potassium Chloride	278	56
Hydrocodone/Acetaminophen

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$1,412 across 80 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-07-25
Last updated: 2014-05-01

Frequently asked questions

What is Randy Grellner's NPI number?: Randy Grellner's National Provider Identifier (NPI) is 1356364376, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Randy Grellner's specialty?: Randy Grellner is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Randy Grellner located?: Randy Grellner's practice location on file with NPPES is 1025 E 2nd St, Cushing, OK 74023-4136.
What is Randy Grellner's phone number?: The practice phone number listed in the NPPES registry for Randy Grellner is (918) 225-3627.
Does Randy Grellner accept Medicare?: Randy Grellner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Randy Grellner's NPI active?: Yes — Randy Grellner's NPI (1356364376) is active in the NPPES registry as of the last update on 2014-05-01.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	750	$123
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	726	$86
Injection of Drug Or Substance Under Skin Or Into Muscle96372	540	$14
Insertion of Needle Into Vein for Collection of Blood Sample36415	517	$9
Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439	174	$126
Hemoglobin A1c Level83036	158