J. MICHAEL GRUENWALD MD FACS
NPI 1275623761
Orthopaedic Surgery - Orthopaedic Trauma in Little Rock, AR

NPI Status: Active since October 13, 2006

Contact Information

6221 COLONEL GLENN RD STE B
LITTLE ROCK, AR
ZIP 72204
Phone: (501) 441-5558

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  • Individual
  • Male
  • Orthopaedic Surgery
  • Orthopaedic Trauma
  • Accepts Insurance
  • PECOS Enrolled

About J. GRUENWALD

This page provides the complete NPI Profile along with additional information for J. Gruenwald, a provider established in Little Rock, Arkansas with a medical specialization in Orthopaedic Surgery, focusing in orthopaedic trauma . The healthcare provider is registered in the NPI registry with number 1275623761 assigned on October 2006. The practitioner's primary taxonomy code is 207XX0801X with license number C-8343 (AR). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1275623761
Provider Name
J. MICHAEL GRUENWALD MD FACS
Other Name
DR. JOHANNES MICHAEL GRUENWALD M.D., F.A.C.S
Other Name Type
Other Name (5)
Gender
Male
Entity Type
Individual
Location Address
6221 COLONEL GLENN RD STE B LITTLE ROCK, AR 72204
Location Phone
(501) 441-5558
Mailing Address
6221 COLONEL GLENN RD STE B LITTLE ROCK, AR 72204
Mailing Phone
(501) 441-5558
Is Sole Proprietor?
No
Enumeration Date
10-13-2006
Last Update Date
11-18-2025
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Orthopaedic Surgery Orthopaedic Trauma

Taxonomy Code
207XX0801X
Type
Allopathic & Osteopathic Physicians
License No.
C-8343
License State
AR
Taxonomy Description
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic trauma surgeons deal with the evaluation and management of acute orthopaedic injuries, evaluation and treatment of post-traumatic deformities and nonunions, acute and delayed reconstruction of pelvic and acetabular fractures, as well as osteotomy in the adult hip for treatment of hip arthritis.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • Premera Blue Cross Alaska One Gold - PPO
  • Premera Blue Cross Preferred Bronze 5800 HSA - PPO
  • Premera Blue Cross Preferred Bronze 6350 - PPO
  • Premera Blue Cross Preferred Gold 1500 - PPO
  • Premera Blue Cross Preferred Silver 4500 - PPO
  • Premera Blue Cross Standard Bronze II - PPO
  • Premera Blue Cross Standard Gold - PPO
  • Premera Blue Cross Standard Silver - PPO
  • Premera Blue Cross Family Dental - PPO
  • Premera Blue Cross Pediatric Dental - PPO

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Medicare Participation & PECOS Enrollment Status

J. Gruenwald is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Aspiration and/or injection of fluid from large joint

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.

This service was performed 185 times for 46 patients

Complete ultrasound study of arm and leg arteries

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

This service was performed 70 times for 35 patients

Electrocardiogram (ecg) 1 to 3 leads with review by physician

An Electrocardiogram (ECG) is a non-invasive test that records the electrical activity of your heart. It uses 1 to 3 leads (sensors) placed on your skin. A physician reviews the results to assess heart rate, rhythm, and detect any abnormalities.

This service was performed 22 times for 22 patients

Established patient office or other outpatient visit, 10-19 minutes

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.

This service was performed 138 times for 74 patients

Established patient office or other outpatient visit, 20-29 minutes

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.

This service was performed 73 times for 40 patients

Established patient office or other outpatient visit, 30-39 minutes

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.

This service was performed 68 times for 27 patients

Hyaluronan or derivitive, genvisc 850, for intra-articular injection, 1 mg

Genvisc 850 is an injection containing hyaluronan, a substance naturally found in your joints. It helps to lubricate and cushion your joints. This treatment is used to relieve knee pain due to osteoarthritis when other treatments have not worked.

This service was performed 4,231 times for 43 patients

Lower limb (leg) arthroscopy (minimally invasive joint repair)

Lower limb arthroscopy is a minimally invasive procedure that allows doctors to examine and repair issues in your leg joints. It involves making small incisions through which a tiny camera and instruments are inserted. This technique can help diagnose and treat various joint problems with less pain and quicker recovery time.

This service was performed for 1-10 patients

New patient office or other outpatient visit, 30-44 minutes

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

This service was performed 23 times for 23 patients

New patient office or other outpatient visit, 45-59 minutes

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.

This service was performed 19 times for 19 patients

Testing of autonomic (sympathetic and parasympathetic) nervous system function, at least 5 minutes of tilt

This procedure tests how your autonomic nervous system, which controls body functions like heart rate and blood pressure, responds to changes in body position. You'll be secured on a tilt table and monitored for at least 5 minutes as the table is tilted to simulate standing up.

This service was performed 33 times for 33 patients

Testing of autonomic (sympathetic) nervous system function

Testing of autonomic nervous system function assesses how well your body's automatic processes, like heart rate and blood pressure, are working. It involves various non-invasive tests like heart rate variability and sweat production tests.

This service was performed 33 times for 33 patients

X-ray of knee, 1-2 views

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

This service was performed 37 times for 20 patients

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1275623761, we treat the final digit (1) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
2
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
5
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
2
Unchanged
Pos 7
3
Doubled → 6
Pos 8
7
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
1
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 7 → 14 → 5 6 → 12 → 3 3 → 6 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 2 + 1 + 4 + 5 + 1 + 2 + 2 + 6 + 7 + 1 + 2 + 24 = 59

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1275623761.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Nurse Practitioner
6221 COLONEL GLENN RD STE B
LITTLE ROCK, AR 72204
Emergency Medicine
6221 COLONEL GLENN RD STE B
LITTLE ROCK, AR 72204
Family Medicine
6221 COLONEL GLENN RD STE B
LITTLE ROCK, AR 72204

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1275623761, enumerated as an "individual" on October 13, 2006.

The provider is located at 6221 COLONEL GLENN RD STE B LITTLE ROCK, AR 72204 and the phone number is (501) 441-5558.

Orthopaedic Surgery with taxonomy code 207XX0801X and a focus in Orthopaedic Trauma.

The provider might be accepting Accepts: Premera Blue Cross Blue Shield of Alaska. Please consult your insurance carrier or call the provider to verify.