DR. JOHN C GERSHMAN-TEWKSBURY MD
NPI 1053335992
Pathology - Clinical Pathology/Laboratory Medicine in Presque Isle, ME

NPI Status: Active since July 26, 2006

Contact Information

140 ACADEMY ST
PRESQUE ISLE, ME
ZIP 04769
Phone: (207) 768-4209
Fax: (207) 768-4013

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  • Individual
  • Male
  • Pathology
  • Clinical Pathology/Laboratory Medicine

About JOHN GERSHMAN-TEWKSBURY

This page provides the complete NPI Profile along with additional information for John Gershman-tewksbury, a provider established in Presque Isle, Maine with a medical specialization in Pathology, focusing in clinical pathology/laboratory medicine . The healthcare provider is registered in the NPI registry with number 1053335992 assigned on July 2006. The practitioner's primary taxonomy code is 207ZP0105X with license number 012546 (ME). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1053335992
Provider Name
DR. JOHN C GERSHMAN-TEWKSBURY MD
Gender
Male
Entity Type
Individual
Location Address
140 ACADEMY ST PRESQUE ISLE, ME 04769
Location Phone
(207) 768-4209
Location Fax
(207) 768-4013
Mailing Address
PO BOX 1820 PRESQUE ISLE, ME 04769
Mailing Phone
(207) 764-7529
Mailing Fax
(207) 768-4013
Is Sole Proprietor?
No
Enumeration Date
07-26-2006
Last Update Date
07-09-2007
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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

Pathology Clinical Pathology/Laboratory Medicine

Taxonomy Code
207ZP0105X
Type
Allopathic & Osteopathic Physicians
License No.
012546
License State
ME
Taxonomy Description
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

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.

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.

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
003962OTHER (01)MEANTHEM INDIVIDUAL ID
TEMM1186MEDICARE PIN (08)ME 
B86456MEDICARE UPIN (02)ME 

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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 1053335992, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
0
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
3
Unchanged
Pos 5
3
Doubled → 6
Pos 6
3
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
9
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
2
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 3 → 6 5 → 10 → 1 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 0 + 3 + 6 + 3 + 1 + 0 + 9 + 1 + 8 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1053335992.

Other Providers at the Same Location


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

Pharmacist (Pharmacotherapy)
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Anesthesiology
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Registered Nurse (Wound Care)
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Physician Assistant
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Hospitalist
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Social Worker (Clinical)
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Obstetrics & Gynecology
140 ACADEMY ST, SUITE 4
PRESQUE ISLE, ME 04769
Obstetrics & Gynecology
140 ACADEMY ST, SUITE 4
PRESQUE ISLE, ME 04769
Physician Assistant
140 ACADEMY ST, SUITE3
PRESQUE ISLE, ME 04769
Hospitalist
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Pathology (Clinical Pathology/Laboratory Medicine)
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Physician Assistant
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Anesthesiology
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Dietitian, Registered
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Dietitian, Registered
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Dietitian, Registered
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Family Medicine
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Family Medicine
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Internal Medicine (Hematology & Oncology)
140 ACADEMY ST
PRESQUE ISLE, ME 04769
Family Medicine
140 ACADEMY ST
PRESQUE ISLE, ME 04769

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1053335992, enumerated as an "individual" on July 26, 2006.

The provider is located at 140 ACADEMY ST PRESQUE ISLE, ME 04769 and the phone number is (207) 768-4209.

Pathology with taxonomy code 207ZP0105X and a focus in Clinical Pathology/Laboratory Medicine.

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