GREGORY CLARKE M.D., S.C.
NPI 1881903789
Clinic/Center - Medical Specialty in Chicago, IL

NPI Status: Active since September 27, 2010

Contact Information

333 N MICHIGAN AVE
SUITE 2014
CHICAGO, IL
ZIP 60601
Phone: (312) 236-3175
Fax: (312) 236-3177

Get Directions Write a Review

  • Organization
  • Clinic/Center
  • Medical Specialty

About GREGORY CLARKE M.D., S.C.

This page provides the complete NPI Profile along with additional information for Gregory Clarke M.d., S.c., a provider established in Chicago, Illinois operating as a Clinic/center, focusing in medical specialty . The healthcare provider is registered in the NPI registry with number 1881903789 assigned on September 2010. The practitioner's primary taxonomy code is 261QM2500X with license number 036-071641 (IL). The provider is registered as an organization and their NPI record was last updated 16 years ago. The authorized official of this NPI record is Gregory Clarke M.d. (President/owner)

NPI
1881903789
Provider Name
GREGORY CLARKE M.D., S.C.
Entity Type
Organization
Location Address
333 N MICHIGAN AVE SUITE 2014 CHICAGO, IL 60601
Location Phone
(312) 236-3175
Location Fax
(312) 236-3177
Mailing Address
PO BOX 802080 CHICAGO, IL 60680
Mailing Phone
(312) 236-3175
Mailing Fax
(312) 236-3177
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
09-27-2010
Last Update Date
09-27-2010
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

Clinic/Center Medical Specialty

Taxonomy Code
261QM2500X
Type
Ambulatory Health Care Facilities
License No.
036-071641
License State
IL
Taxonomy Description
An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to a specific area of medical specialization. Frequently used for Title V related Children's Specialty services or to meet specific public health needs (e.g., infectious diseases or breast and cervical cancer).

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

GREGORY CLARKE M.D.

Authorized Official Title
PRESIDENT/OWNER
Authorized Official Phone
(312) 236-3175

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
D16460MEDICARE UPIN (02)IL 

Reviews for GREGORY CLARKE M.D., S.C.

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 1881903789, 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.

Pos 1
1
Doubled → 2
Pos 2
8
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
1
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
0
Unchanged
Pos 7
3
Doubled → 6
Pos 8
7
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
9
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 8 → 16 → 7 9 → 18 → 9 3 → 6 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 6 + 1 + 1 + 8 + 0 + 6 + 7 + 1 + 6 + 24 = 71

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.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1881903789.

Other Providers at the Same Location


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

Chiropractor
333 N MICHIGAN AVE, SUITE 1030
CHICAGO, IL 60601
Psychiatry & Neurology (Psychiatry)
333 N MICHIGAN AVE, SUITE 602
CHICAGO, IL 60601
Psychologist (Clinical)
333 N MICHIGAN AVE, SUITE 1812
CHICAGO, IL 60601
Social Worker (Clinical)
333 N MICHIGAN AVE, SUITE 309
CHICAGO, IL 60601
Clinical Neuropsychologist
333 N MICHIGAN AVE, SUITE 1801
CHICAGO, IL 60601
Psychiatry & Neurology (Psychiatry)
333 N MICHIGAN AVE, ANNE OSCHERWITZ MD #1125
CHICAGO, IL 60601
Psychologist (Clinical)
333 N MICHIGAN AVE, SUITE #1900
CHICAGO, IL 60601
Psychiatry & Neurology (Psychiatry)
333 N MICHIGAN AVE, SUITE 710
CHICAGO, IL 60601
Psychiatry & Neurology (Psychiatry)
333 N MICHIGAN AVE, SUITE 1114
CHICAGO, IL 60601
Clinical Neuropsychologist
333 N MICHIGAN AVE, SUITE 1801
CHICAGO, IL 60601
Psychologist (Clinical)
333 N MICHIGAN AVE, SUITE 801
CHICAGO, IL 60601
Psychologist (Clinical)
333 N MICHIGAN AVE, SUITE 1801
CHICAGO, IL 60601
Psychologist
333 N MICHIGAN AVE, STE. 1801
CHICAGO, IL 60601
Social Worker (Clinical)
333 N MICHIGAN AVE, SUITE 301
CHICAGO, IL 60601
Psychiatry & Neurology (Psychiatry)
333 N MICHIGAN AVE, SUITE 1818
CHICAGO, IL 60601
Social Worker (Clinical)
333 N MICHIGAN AVE, SUITE 1801
CHICAGO, IL 60601
Internal Medicine
333 N MICHIGAN AVE, SUITE 2014
CHICAGO, IL 60601
Psychologist (Clinical)
333 N MICHIGAN AVE, SUITE 1801
CHICAGO, IL 60601
Dentist (General Practice)
333 N MICHIGAN AVE, SUITE 3300
CHICAGO, IL 60601
Marriage & Family Therapist
333 N MICHIGAN AVE, STE. #1801
CHICAGO, IL 60601

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1881903789, enumerated as an "organization" on September 27, 2010.

The provider is located at 333 N MICHIGAN AVE SUITE 2014 CHICAGO, IL 60601 and the phone number is (312) 236-3175.

Clinic/Center with taxonomy code 261QM2500X and a focus in Medical Specialty.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.