DR. ADRIEN CARL ENNIS D.O.
NPI 1659868966
Pediatrics in Meadville, PA

NPI Status: Active since April 23, 2018

Contact Information

765 LIBERTY ST
STE 111
MEADVILLE, PA
ZIP 16335
Phone: (814) 336-6384

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  • Individual
  • Male
  • Pediatrics

About ADRIEN ENNIS

This page provides the complete NPI Profile along with additional information for Adrien Ennis, a pediatrician established in Meadville, Pennsylvania with a medical specialization in Pediatrics. The healthcare provider is registered in the NPI registry with number 1659868966 assigned on April 2018. The practitioner's primary taxonomy code is 208000000X with license number 02008986A (IN). The provider is registered as an individual and his NPI record was last updated April 2026.

NPI
1659868966
Provider Name
DR. ADRIEN CARL ENNIS D.O.
Gender
Male
Entity Type
Individual
Location Address
765 LIBERTY ST STE 111 MEADVILLE, PA 16335
Location Phone
(814) 336-6384
Mailing Address
765 LIBERTY ST STE 111 MEADVILLE, PA 16335
Mailing Phone
(814) 336-6384
Is Sole Proprietor?
No
Enumeration Date
04-23-2018
Last Update Date
04-21-2026
Code Navigator

A pediatrician like Adrien Ennis is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, etc.

Location Map

Secondary Locations

  • 2400 17th St
    Columbus, IN 47201
    (812) 376-5974

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

Pediatrics

Taxonomy Code
208000000X
Type
Allopathic & Osteopathic Physicians
License No.
02008986A
License State
IN
Taxonomy Description
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

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)
1208000000XAllopathic & Osteopathic Physicians

Pediatrics

TRAINING (FL)
2208000000XAllopathic & Osteopathic Physicians

Pediatrics

05021422 (PA)

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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 1659868966, we treat the final digit (6) 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 74. The final step is to find the difference between that total and the next multiple of ten (80 - 74 = 6).

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
6
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
9
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
6
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
9
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
6
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 5 → 10 → 1 8 → 16 → 7 8 → 16 → 7 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 0 + 9 + 1 + 6 + 6 + 1 + 6 + 9 + 1 + 2 + 24 = 74

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

The next multiple of ten after 74 is 80. The difference is the calculated check digit.

80 - 74 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1659868966.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Surgery
765 LIBERTY ST, SUITE 311
MEADVILLE, PA 16335
Internal Medicine (Cardiovascular Disease)
765 LIBERTY ST, SUITE 105
MEADVILLE, PA 16335
Pediatrics
765 LIBERTY ST, SUITE 111
MEADVILLE, PA 16335
Pediatrics
765 LIBERTY ST, SUITE 111
MEADVILLE, PA 16335
Pediatrics
765 LIBERTY ST, SUITE 111
MEADVILLE, PA 16335
Internal Medicine
765 LIBERTY ST, SUITE # 301
MEADVILLE, PA 16335
Internal Medicine
765 LIBERTY ST, SUITE # 307
MEADVILLE, PA 16335
Internal Medicine
765 LIBERTY ST, SUITE # 301
MEADVILLE, PA 16335
Nurse Practitioner (Pediatrics)
765 LIBERTY ST, SUITE 111
MEADVILLE, PA 16335
Obstetrics & Gynecology
765 LIBERTY ST, SUITE 202
MEADVILLE, PA 16335
Internal Medicine
765 LIBERTY ST, SUITE 301
MEADVILLE, PA 16335
Family Medicine
765 LIBERTY ST, SUITE # 307
MEADVILLE, PA 16335
Obstetrics & Gynecology
765 LIBERTY ST, SUITE 202
MEADVILLE, PA 16335
Family Medicine
765 LIBERTY ST, 310
MEADVILLE, PA 16335
Physician Assistant
765 LIBERTY ST
MEADVILLE, PA 16335
Internal Medicine (Cardiovascular Disease)
765 LIBERTY ST, 105
MEADVILLE, PA 16335
Non-Pharmacy Dispensing Site
765 LIBERTY ST, 307 - 3RD FLOOR
MEADVILLE, PA 16335
Psychiatry & Neurology (Neurology)
765 LIBERTY ST, STE 303
MEADVILLE, PA 16335
Pediatrics
765 LIBERTY ST, SUITE 111
MEADVILLE, PA 16335
Internal Medicine
765 LIBERTY ST, SUITE # 307
MEADVILLE, PA 16335

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1659868966, enumerated as an "individual" on April 23, 2018.

The provider is located at 765 LIBERTY ST STE 111 MEADVILLE, PA 16335 and the phone number is (814) 336-6384.

Pediatrics with taxonomy code 208000000X.