MR. JOHN ROBYN V DIEZ MD
NPI 1942881909
Internal Medicine - Addiction Medicine in Oakland, MD
NPI Status: Active since April 20, 2021
Contact Information
69 WOLF ACRES DR
OAKLAND, MD
ZIP 21550
Phone: (301) 533-2190
- Individual
- Male
- Internal Medicine
- Addiction Medicine
- Accepts Insurance
- PECOS Enrolled
About JOHN ROBYN DIEZ
This page provides the complete NPI Profile along with additional information for John Robyn Diez, an internist established in Oakland, Maryland with a medical specialization in Internal Medicine, focusing in addiction medicine . The healthcare provider is registered in the NPI registry with number 1942881909 assigned on April 2021. The practitioner's primary taxonomy code is 207RA0401X with license number D0102636 (MD). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1942881909
- Provider Name
- MR. JOHN ROBYN V DIEZ MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 69 WOLF ACRES DR OAKLAND, MD 21550
- Location Phone
- (301) 533-2190
- Mailing Address
- 69 WOLF ACRES DR OAKLAND, MD 21550
- Mailing Phone
- (301) 533-2190
- Is Sole Proprietor?
- No
- Enumeration Date
- 04-20-2021
- Last Update Date
- 08-25-2025
- Code Navigator
An internist like John Robyn Diez is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
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
Internal Medicine Addiction Medicine
- Taxonomy Code
- 207RA0401X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- D0102636
- License State
- MD
- Taxonomy Description
- An internist doctor of osteopathy that specializes in the treatment of addiction disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Added Qualifications in the field of Addiction Medicine.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Bronze 7500 $25 Generic Drugs - HMO
- Bronze 7500 $25 Generic Drugs + Adult Vision & Fitness - HMO
- Diabetes Gold 3000 $0 Chronic Care Drugs & Services - HMO
- Diabetes Gold 3000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness - HMO
- Diabetes Silver 5000 $0 Chronic Care Drugs & Services - HMO
- Diabetes Silver 5000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness - HMO
- Gold 2000 $15 Generic Drugs - HMO
- Gold 2000 $15 Generic Drugs + Adult Vision & Fitness - HMO
- Healthy Heart Gold 3000 $0 Chronic Care Drugs & Services - HMO
- Healthy Heart Gold 3000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness - HMO
- Healthy Heart Silver 5000 $0 Chronic Care Drugs & Services - HMO
- Healthy Heart Silver 5000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness - HMO
- Low Deductible Silver 5000 $3 Generic Drugs - HMO
- Low Deductible Silver 5000 $3 Generic Drugs + Adult Vision & Fitness - HMO
- Low Premium Bronze 10600 $25 Generic Drugs - HMO
- Low Premium Bronze 10600 $25 Generic Drugs + Adult Vision & Fitness - HMO
- Low Premium Silver 6200 $3 Generic Drugs - HMO
- Low Premium Silver 6200 $3 Generic Drugs + Adult Vision & Fitness - HMO
- Platinum Zero $5 Generic Drugs - HMO
- Platinum Zero $5 Generic Drugs + Adult Vision & Fitness - HMO
- my Blue Access WV Major Events PPO Catastrophic 10600 - 3 Free PCP Visits - PPO
- my Blue Access WV PPO Bronze 3800 - PPO
- my Blue Access WV PPO Bronze 3800 + Adult Dental and Vision - PPO
- my Blue Access WV PPO Bronze 9200 - PPO
- my Blue Access WV PPO Gold 0 - PPO
- my Blue Access WV PPO Gold 0 + Adult Dental and Vision - PPO
- my Blue Access WV PPO Gold 1700 HSA - PPO
- my Blue Access WV PPO Premier Gold 0 - PPO
- my Blue Access WV PPO Premier Gold 0 + Adult Dental and Vision - PPO
- my Blue Access WV PPO Premier Silver 0 - PPO
- my Blue Access WV PPO Premier Silver 0 + Adult Dental and Vision - PPO
- my Blue Access WV PPO Standard Bronze 7500 - PPO
- my Blue Access WV PPO Standard Gold 2000 - PPO
- my Blue Access WV PPO Standard Gold 2000 + Adult Dental and Vision - PPO
- my Blue Access WV PPO Standard Silver 6000 - PPO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Medicare Participation & PECOS Enrollment Status
John Robyn Diez 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
Physician Visit Costs
The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.
For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.
The prices below reflect the costs for new and established patients in the 21550 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99204
- Average New Patient Price $133.05
- Minimum New Patient Price $57.99
- Maximum New Patient Price $175.57
- Average New Patient Copayment $33.26
- Minimum New Patient Copayment $14.49
- Maximum New Patient Copayment $43.89
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $102.11
- Minimum Established Patient Price $18.66
- Maximum Established Patient Price $143.02
- Average Established Patient Copayment $25.52
- Minimum Established Patient Copayment $4.66
- Maximum Established Patient Copayment $35.75
* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.
Reviews for MR. JOHN ROBYN V DIEZ MD
There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.
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 1942881909, 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 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 71 is 80. The difference is the calculated check digit.
Other Providers at the Same Location
The following 5 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1942881909, enumerated as an "individual" on April 20, 2021.
The provider is located at 69 WOLF ACRES DR OAKLAND, MD 21550 and the phone number is (301) 533-2190.
Internal Medicine with taxonomy code 207RA0401X and a focus in Addiction Medicine.
The provider might be accepting Accepts: CareSource and Highmark Blue Cross Blue Shield. Please consult your insurance carrier or call the provider to verify.
