DR. RYAN MAYER M.D.
NPI 1255793527
Orthopaedic Surgery - Orthopaedic Trauma in Pomona, CA
NPI Status: Active since March 24, 2016
Contact Information
160 E ARTESIA ST STE 255
POMONA, CA
ZIP 91767
Phone: (095) 964-3469
Fax: (095) 964-3449
- Individual
- Male
- Years of Experience 10
- Orthopaedic Surgery
- Orthopaedic Trauma
- Accepts Medicare Approved Payment
- PECOS Enrolled
About RYAN MAYER
This page provides the complete NPI Profile along with additional information for Ryan Mayer, a provider established in Pomona, California with a medical specialization in Orthopaedic Surgery, focusing in orthopaedic trauma and more than 10 years of experience. He graduated from University Of California, Irvine, California College Of Medicine in 2016. The healthcare provider is registered in the NPI registry with number 1255793527 assigned on March 2016. The practitioner's primary taxonomy code is 207XX0801X with license number A178874 (CA). The provider is registered as an individual and his NPI record was last updated August 2025.
- NPI
- 1255793527
- Provider Name
- DR. RYAN MAYER M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 160 E ARTESIA ST STE 255 POMONA, CA 91767
- Location Phone
- (095) 964-3469
- Location Fax
- (095) 964-3449
- Mailing Address
- 160 E ARTESIA ST STE 255 POMONA, CA 91767
- Mailing Phone
- (095) 964-3469
- Mailing Fax
- (095) 964-3449
- Medical School Name
- UNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
- Graduation Year
- 2016
- Is Sole Proprietor?
- No
- Enumeration Date
- 03-24-2016
- Last Update Date
- 08-06-2025
- Code Navigator
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
Orthopaedic Surgery Orthopaedic Trauma
- Taxonomy Code
- 207XX0801X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A178874
- License State
- CA
- 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.
Medicare Participation & PECOS Enrollment Status
Ryan Mayer is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.
Ryan Mayer 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
PECOS PAC ID: 4587936190
What is the PECOS Associate Control ID?
A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.PECOS Enrollment ID: I20220727002624
What is the Provider Enrollment ID?
The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.Accepts Medicare Assignment? Yes
What does it mean "accepts medicare assignment"?
When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.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.
Hip replacement
Initial hospital inpatient care per day, typically 70 minutes
Upper limb (arm) arthroscopy (minimally invasive joint repair)
A hip replacement is a surgical procedure where a worn-out or damaged hip joint is replaced with an artificial one. This procedure can greatly reduce pain and improve mobility. It's often recommended when other treatments like physical therapy or medications fail to alleviate symptoms.
This service was performed for 1-10 patientsInitial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
This service was performed 16 times for 16 patientsUpper limb arthroscopy is a minimally invasive procedure used to examine and treat issues within your arm's joints. A small camera, called an arthroscope, is inserted through a tiny incision, providing a clear view of the joint. This method often results in less pain and faster recovery compared to open surgery.
This service was performed for 1-10 patientsReviews for DR. RYAN MAYER M.D.
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
1 | 2 | 5 | 5 | 7 | 9 | 3 | 5 | 2 | 7 |
Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
2 | 2 | 10 | 5 | 14 | 9 | 6 | 5 | 4 | |
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
2 + 2 + 1 + 0 + 5 + 1 + 4 + 9 + 6 + 5 + 4 + 24 = 63 | |||||||||
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
70 - 63 = 7 | 7 |
The NPI number 1255793527 is valid because the calculated check digit 7 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 11 providers are registered at the same or nearby location.
NPI | Name / Type | Taxonomy | Address |
---|---|---|---|
1982854626 | DR. HRAYR G BASMAJIAN M.D., M.S. Individual | Orthopaedic Surgery (Orthopaedic Trauma) | 160 E ARTESIA ST STE 255 POMONA, CA 91767 (909) 596-4346 |
1467711713 | DR. CHRISTOPHER BARRETT HAYES M.D. Individual | Orthopaedic Surgery (Orthopaedic Trauma) | 160 E ARTESIA ST STE 255 POMONA, CA 91767 (909) 596-4346 |
1164983375 | AMANDA BALLARD PA-C Individual | Physician Assistant | 160 E ARTESIA ST STE 255 POMONA, CA 91767 (909) 596-4346 |
1861071508 | RENU ORTHOPEDICS, PMC Organization | Orthopaedic Surgery | 160 E ARTESIA ST STE 255 POMONA, CA 91767 (909) 596-4346 |
1457085763 | WINSTON HSIEH Individual | Physician Assistant | 160 E ARTESIA ST STE 255 POMONA, CA 91767 (909) 596-4346 |
1306683321 | HAYLEY MARIE WISHNER PA-C Individual | Physician Assistant | 160 E ARTESIA ST STE 255 POMONA, CA 91767 (909) 596-4346 |
1225700321 | JAMES TYLER ATKINS DPT Individual | Physical Therapist (Orthopedic) | 160 E ARTESIA ST STE 255 POMONA, CA 91767 (909) 596-4346 |
1265147201 | BENJAMIN THOMSON PA-C Individual | Physician Assistant | 160 E ARTESIA ST STE 255 POMONA, CA 91767 (909) 596-4346 |
1407304439 | PREMIER ORTHOPAEDIC TRAUMA SPECIALISTS, PMC Organization | Orthopaedic Surgery | 160 E ARTESIA ST STE 255 POMONA, CA 91767 (909) 596-4346 |
1497218739 | BRIAN M BALLARD Individual | Preventive Medicine (Occupational Medicine) | 160 E ARTESIA ST STE 255 POMONA, CA 91767 (095) 964-3469 |
1154689248 | DR. JOSEPH LIU M.D. Individual | Orthopaedic Surgery (Sports Medicine) | 160 E ARTESIA ST STE 255 POMONA, CA 91767 (909) 596-4346 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1255793527, enumerated in the NPI registry as an "individual" on March 24, 2016
The provider is located at 160 E Artesia St Ste 255 Pomona, Ca 91767 and the phone number is (095) 964-3469
The provider's speciality is Orthopaedic Surgery with taxonomy code 207XX0801X with a focus in Orthopaedic Trauma
The provider has more than 10 years of experience. He graduated from University Of California, Irvine, California College Of Medicine in 2016.
Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary 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.
The most common procedures or services performed by this practitioner are: Hip replacement, Initial hospital inpatient care per day, typically 70 minutes and Upper limb (arm) arthroscopy (minimally invasive joint repair).
This NPI record was last updated on March 24, 2016. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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