DR. RANDY JAMES GRELLNER DO
NPI 1356364376
Family Medicine in Cushing, OK

Q: What is Randy Grellner's NPI number?

The NPI number for Randy Grellner is 1356364376. It was assigned to this individual provider in the NPPES registry on July 25, 2006. The provider is also known as Randall James Grellner Do.

Q: What is Randy Grellner's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Randy Grellner was last updated on May 1, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 July 25, 2006PECOS EnrolledAccepts Medicare Assignment

91.18/100

CMS Quality Rating

1025 E 2ND ST, CUSHING, OK 74023(918) 225-3627(918) 225-1008 Get Directions Write a Review

NPPES record last updated: May 1, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Randy James Grellner Do NPPES

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

DR. RANDY JAMES GRELLNER DO (NPI 1356364376) is an individual family medicine provider in Cushing, Oklahoma, licensed in Oklahoma (3663) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Stillwater Medical Center, and is a graduate of Oklahoma State University College Of Osteopathic Medicine (1998).

NPPES Registry Identity

NPI1356364376

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameDR. RANDY JAMES GRELLNERCredential: DO

Location Address1025 E 2ND STCushing, OK 74023-4136

Mailing Address1025 E 2nd StCushing, OK 74023-4136 · (918) 225-3627 · Fax (918) 225-1008

Phone(918) 225-3627

Fax(918) 225-1008

Sole ProprietorNo

Medical School CMSOklahoma State University College Of Osteopathic MedicineGraduated 1998

Enumeration DateJuly 25, 2006

Last NPPES UpdateMay 1, 2014

✔ NPI 1356364376 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in OK · 3663

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

1025 E 2ND ST, Cushing, OK 74023

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Other Names 1

Other Name (5)Randall James Grellner Do

Other Identifiers 3

Medicare UPING96907

Medicaid100137700BOK

Medicare ID-Type Unspecified249424702

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CommunityCare, Mending Health, 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. Randy James Grellner Do 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 ID7416923271

PECOS Enrollment IDI20040903000033

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

Stillwater Medical Center Authority

20 mi

General Acute Care Hospital

1323 W 6TH AVE
Stillwater, OK 74074

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

NPI 1164494027 (405) 372-1480

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 25

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.

Injection, testosterone cypionate, 1 mg J1071

Testosterone cypionate is a medication given via injection to help balance hormone levels in your body. It's typically used when your body doesn't produce enough of this hormone naturally. The 1 mg dose refers to the amount of medication in each injection.

26,080 services28 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

1,522 services133 patients

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

1,140 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.

750 services362 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.

726 services342 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

540 services198 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

517 services328 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

437 services75 patients

Injection, ceftriaxone sodium, per 250 mg J0696

Ceftriaxone sodium is an antibiotic injection used to treat a variety of bacterial infections. Each injection contains 250 mg of the medicine. It works by stopping the growth of bacteria in your body.

240 services47 patients

Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg J3420

This is a procedure where a small dose of Vitamin B-12, also known as Cyanocobalamin, is injected into your body. This vitamin is essential for nerve function and the production of red blood cells. It's often used to treat vitamin B-12 deficiency.

224 services62 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

174 services174 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

158 services85 patients

Injection, ketorolac tromethamine, per 15 mg J1885

Ketorolac tromethamine is a medication administered through injection, often used to manage moderate to severe pain. Each 15 mg dose helps to reduce hormones causing inflammation and pain in the body. It is not recommended for long-term use.

136 services28 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

115 services49 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

104 services73 patients

Blood test, clotting time 85610

A clotting time blood test helps determine how quickly your blood forms clots, a process crucial to stop bleeding. During the test, a small blood sample is taken from your arm. The sample is then analyzed in a lab to see how long it takes for a clot to form.

59 services11 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

53 services53 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

38 services28 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

33 services33 patients

Injection into tendon at attachment to bone or muscle 20551

This procedure involves injecting medicine into a tendon where it attaches to bone or muscle. It's done to alleviate pain or inflammation. The injection may contain a local anesthetic or a corticosteroid to reduce swelling. It's a common treatment for various orthopedic conditions.

29 services27 patients

Injection, methylprednisolone acetate, 80 mg J1040

Methylprednisolone acetate is a strong anti-inflammatory medication. It is often given as an 80 mg injection to reduce inflammation and pain. It's commonly used for conditions like arthritis, allergic disorders, or other inflammatory diseases.

22 services19 patients

Injection, methylprednisolone acetate, 40 mg J1030

Methylprednisolone acetate is a medication given through an injection. It's a type of corticosteroid, which reduces inflammation and immune responses. It can be used to treat various conditions like arthritis, allergies, and skin diseases. This dose is 40 mg.

21 services21 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.

18 services15 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

14 services12 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

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.

Stillwater Medical Center

Acute Care Hospitals · Stillwater, OK

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number370049

Location1323 West 6th StreetStillwater, OK 74076 · Payne County

Emergency services Birthing friendly

O U Medical Center

Acute Care Hospitals · Oklahoma City, OK

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number370093

Location700 NE 13th StreetOklahoma City, OK 73104 · Oklahoma County

Emergency services Birthing friendly

Hillcrest Hospital Cushing

Acute Care Hospitals · Cushing, OK

OwnershipProprietary

CMS Certification Number370099

Location1027 East Cherry StreetCushing, OK 74023 · Payne County

Emergency services

Saint Francis Hospital South, LLC

Acute Care Hospitals · Tulsa, OK

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number370218

Location10501 East 91st Street SouthTulsa, OK 74133 · Tulsa County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 74023 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

$82.46 typical visit price

range $53.00 – $162.61

Typical copayment $20.61 (range $13.25 – $40.65)

Most-billed visit code 99203

Established Patient

$94.27 typical visit price

range $16.68 – $132.40

Typical copayment $23.56 (range $4.17 – $33.10)

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.

91.18/100

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

Scored through an Alternative Payment Model

Quality

79.27

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 26

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

8 suppliers41 claims83 services$5.48 avg. paid by Medicare

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

4 suppliers54 claims54 services$39.02 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

3 suppliers25 claims25 services$97.03 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

3 suppliers13 claims29 services$28.93 avg. paid by Medicare

Cushion for use on nasal mask interface, replacement only, each A7032

DME-Other DME · category DE001N

4 suppliers23 claims133 services$19.91 avg. paid by Medicare

Pillow for use on nasal cannula type interface, replacement only, pair A7033

DME-Other DME · category DE001N

4 suppliers13 claims76 services$16.60 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

5 suppliers62 claims62 services$61.06 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

6 suppliers41 claims41 services$20.00 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

5 suppliers25 claims25 services$14.11 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

6 suppliers72 claims298 services$2.38 avg. paid by Medicare

Water chamber for humidifier, used with positive airway pressure device, replacement, each A7046

DME-Other DME · category DE001N

6 suppliers28 claims28 services$11.55 avg. paid by Medicare

Walker, folding, wheeled, adjustable or fixed height E0143

DME-Other DME · category DE000N

2 suppliers12 claims12 services$6.55 avg. paid by Medicare

Seat attachment, walker E0156

DME-Other DME · category DE000N

1 supplier13 claims13 services$1.37 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

2 suppliers11 claims11 services$24.39 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

3 suppliers45 claims45 services$20.08 avg. paid by Medicare

Portable oxygen contents, gaseous, 1 month's supply = 1 unit E0443

DME-Oxygen and Supplies · category DC000N

1 supplier19 claims19 services$41.18 avg. paid by Medicare

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

1 supplier12 claims12 services$911.50 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

4 suppliers16 claims16 services$7.71 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

2 suppliers62 claims62 services$47.00 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

7 suppliers84 claims84 services$100.55 avg. paid by Medicare

Arformoterol, inhalation solution, fda approved final product, non-compounded, administered through dme, unit dose form, 15 micrograms J7605

DME-Drugs Administered Through DME · category DG006N

3 suppliers12 claims720 services$4.09 avg. paid by Medicare

Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613

DME-Drugs Administered Through DME · category DG006N

3 suppliers12 claims2,147 services$0.03 avg. paid by Medicare

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

DME-Drugs Administered Through DME · category DG006N

4 suppliers38 claims4,606 services$0.08 avg. paid by Medicare

Standard wheelchair K0001

DME-Wheelchairs · category DD000N

3 suppliers24 claims32 services$26.48 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

4 suppliers36 claims36 services$189.79 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

5 suppliers52 claims52 services$23.02 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 7

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

DR. COLM PATRICK MCCAULEY DO

Family Medicine

1025 E 2ND ST
CUSHING, OK 74023

Payne County (918) 225-3627

COURTNEY GAIL ELLIOT ARNP

Nurse Practitioner

1025 E 2ND ST
CUSHING, OK 74023

Payne County (918) 225-3627

QUEEN ERUE APRN-CNP

Nurse Practitioner

1025 E 2ND ST
CUSHING, OK 74023

Payne County (918) 225-3627

AMBER KATHRYN REINECKE PA

Physician Assistant (Medical)

1025 E 2ND ST
CUSHING, OK 74023

Payne County (918) 225-3627

DR. HALIE MUCKELRATH DO, MS

Family Medicine

1025 E 2ND ST
CUSHING, OK 74023

Payne County (918) 579-3825

DR. ROBERT BRIAN HIGHTOWER DO

Internal Medicine

1025 E 2ND ST
CUSHING, OK 74023

Payne County (918) 225-3627

AHS OKLAHOMA PHYSICIAN GROUP, LLC

Clinic/Center (Rural Health)

1025 E 2ND ST
CUSHING, OK 74023

Payne County (918) 225-3627

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 Randy Grellner's NPI number?

The NPI number for Randy Grellner is 1356364376. It was assigned to this individual provider in the NPPES registry on July 25, 2006. The provider is also known as Randall James Grellner Do.

Where is Randy Grellner located?

Randy Grellner practices at 1025 E 2nd St, Cushing, OK 74023. The listed phone number is (918) 225-3627.

What is Randy Grellner's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Randy Grellner enrolled in Medicare?

Yes. Randy Grellner 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 Randy Grellner's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Randy Grellner reassigns Medicare benefits to Stillwater Medical Center Authority (Stillwater, OK). 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 Randy Grellner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Randy Grellner accept?

Health plans from CommunityCare, Mending Health and UnitedHealthcare list Randy Grellner 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 Randy Grellner affiliated with any hospitals?

According to CMS data, Randy Grellner is affiliated with Stillwater Medical Center, O U Medical Center, Hillcrest Hospital Cushing and Saint Francis Hospital South, LLC.

When was this NPI record last updated?

The NPPES record for Randy Grellner was last updated on May 1, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.