DR. GARY RUELAS D.O., PH.D.
NPI 1154461549
Neuromusculoskeletal Medicine & OMM in Orange, CA
NPI Status: Active since February 07, 2007
Contact Information
707 E CHAPMAN AVE
ORANGE, CA
ZIP 92866
Phone: (714) 771-2880
Fax: (714) 771-2693
- Individual
- Male
- Neuromusculoskeletal Medicine & OMM
- PECOS Enrolled
- Opted-Out Medicare
About GARY RUELAS
This page provides the complete NPI Profile along with additional information for Gary Ruelas, a provider established in Orange, California with a medical specialization in Neuromusculoskeletal Medicine & Omm. The healthcare provider is registered in the NPI registry with number 1154461549 assigned on February 2007. The practitioner's primary taxonomy code is 204D00000X with license number 20A7737 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1154461549
- Provider Name
- DR. GARY RUELAS D.O., PH.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 707 E CHAPMAN AVE ORANGE, CA 92866
- Location Phone
- (714) 771-2880
- Location Fax
- (714) 771-2693
- Mailing Address
- 707 E CHAPMAN AVE ORANGE, CA 92866
- Mailing Phone
- (714) 771-2880
- Mailing Fax
- (714) 771-2693
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 02-07-2007
- Last Update Date
- 09-11-2025
- Code Navigator
The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. Gary Ruelas opted out of Medicare effective on 04-01-2018 until 04-01-2026. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare but is permitted to order and refer services to other healthcare providers.
Location Map
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
Neuromusculoskeletal Medicine & OMM
- Taxonomy Code
- 204D00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 20A7737
- License State
- CA
- Taxonomy Description
- The Neuromusculoskeletal Medicine and Osteopathic Manipulative Medicine physician directs special attention to the neuromusculoskeletal system and its interaction with other body systems. Neuromusculoskeletal Medicine and Osteopathic Manipulative Medicine encompasses increased knowledge and understanding of osteopathic principles and practice and heightened technical skills of osteopathic manipulative medicine, and integrates each of these into the management of pediatric, adolescent, adult, and geriatric patients.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 103G00000X | Behavioral Health & Social Service Providers | Clinical Neuropsychologist | PSY13999 (CA) |
| 2 | 103TC0700X | Behavioral Health & Social Service Providers | Psychologist | PSY13999 (CA) |
| 3 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | 20A7737 (CA) |
Medicare Participation & PECOS Enrollment Status
Gary Ruelas 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
Opted-Out of Medicare? Yes
Opt-Out Effective Date: 04-01-2018
Opt-Out End Date: 04-01-2026
Eligible to Order and Refer? 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
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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 1154461549, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 61 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 3 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1154461549, enumerated as an "individual" on February 07, 2007.
The provider is located at 707 E CHAPMAN AVE ORANGE, CA 92866 and the phone number is (714) 771-2880.
Neuromusculoskeletal Medicine & OMM with taxonomy code 204D00000X.
