ANDREW GRAY MD
NPI 1770287138
Student in an Organized Health Care Education/Training Program in Portland, OR
NPI Status: Active since March 29, 2023
Contact Information
2801 N GANTENBEIN AVE
PORTLAND, OR
ZIP 97227
Phone: (503) 413-8407
- Individual
- Male
- Student in an Organized Health Care Educ...
- PECOS Enrolled
About ANDREW GRAY
This page provides the complete NPI Profile along with additional information for Andrew Gray, a primary care provider established in Portland, Oregon with a medical specialization in Student In An Organized Health Care Education/training Program. The healthcare provider is registered in the NPI registry with number 1770287138 assigned on March 2023. The practitioner's primary taxonomy code is 390200000X. The provider is registered as an individual and his NPI record was last updated May 2026.
- NPI
- 1770287138
- Provider Name
- ANDREW GRAY MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 2801 N GANTENBEIN AVE PORTLAND, OR 97227
- Location Phone
- (503) 413-8407
- Mailing Address
- PO BOX 3777 PORTLAND, OR 97208
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 03-29-2023
- Last Update Date
- 05-13-2026
- Code Navigator
A primary care provider (PCP) like Andrew Gray sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, etc .
Location Map
Secondary Locations
- 1015 NW 22nd Ave
Portland, OR 97210
(503) 413-8401
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
Student in an Organized Health Care Education/Training Program
- Taxonomy Code
- 390200000X
- Type
- Student, Health Care
- Taxonomy Description
- An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
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 | 207R00000X | Allopathic & Osteopathic Physicians | Internal Medicine | PG230501 (OR) |
Medicare Participation & PECOS Enrollment Status
Andrew Gray 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
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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 1770287138, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).
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 62 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
PORTLAND, OR 97227
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1770287138, enumerated as an "individual" on March 29, 2023.
The provider is located at 2801 N GANTENBEIN AVE PORTLAND, OR 97227 and the phone number is (503) 413-8407.
Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
