MARY S AHN M.D.
NPI 1952429532
Psychiatry & Neurology - Child & Adolescent Psychiatry in Boston, MA

NPI Status: Active since March 26, 2007

Contact Information

50 STANIFORD ST
MGH ARMS PROGRAM
BOSTON, MA
ZIP 02114
Phone: (617) 726-2241

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  • Individual
  • Female
  • Psychiatry & Neurology
  • Child & Adolescent Psychiatry

About MARY AHN

This page provides the complete NPI Profile along with additional information for Mary Ahn, a provider established in Boston, Massachusetts with a medical specialization in Psychiatry & Neurology, focusing in child & adolescent psychiatry . The healthcare provider is registered in the NPI registry with number 1952429532 assigned on March 2007. The practitioner's primary taxonomy code is 2084P0804X with license number 212339 (MA). The provider is registered as an individual and her NPI record was last updated 19 years ago.

NPI
1952429532
Provider Name
MARY S AHN M.D.
Gender
Female
Entity Type
Individual
Location Address
50 STANIFORD ST MGH ARMS PROGRAM BOSTON, MA 02114
Location Phone
(617) 726-2241
Mailing Address
50 STANIFORD ST MGH ARMS PROGRAM BOSTON, MA 02114
Mailing Phone
(617) 726-2241
Is Sole Proprietor?
Yes
Enumeration Date
03-26-2007
Last Update Date
12-04-2007
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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

Psychiatry & Neurology Child & Adolescent Psychiatry

Taxonomy Code
2084P0804X
Type
Allopathic & Osteopathic Physicians
License No.
212339
License State
MA
Taxonomy Description
Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.

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)
12084P0800XAllopathic & Osteopathic Physicians

Psychiatry & Neurology
Psychiatry

212339 (MA)

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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 1952429532, 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 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
9
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
2
Unchanged
Pos 5
4
Doubled → 8
Pos 6
2
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
5
Unchanged
Pos 9
3
Doubled → 6
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 4 → 8 9 → 18 → 9 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 0 + 2 + 8 + 2 + 1 + 8 + 5 + 6 + 24 = 68

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

The next multiple of ten after 68 is 70. The difference is the calculated check digit.

70 - 68 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1952429532.

Other Providers at the Same Location


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

Internal Medicine
50 STANIFORD ST, 3RD FLOOR S50 3
BOSTON, MA 02114
Psychiatry & Neurology (Psychiatry)
50 STANIFORD ST, SUITE 401 S50 401
BOSTON, MA 02114
Dermatology
50 STANIFORD ST, SUITE 200
BOSTON, MA 02114
Internal Medicine
50 STANIFORD ST, 3RD FLOO S503
BOSTON, MA 02114
Internal Medicine
50 STANIFORD ST, 4TH FLOOR
BOSTON, MA 02114
Internal Medicine
50 STANIFORD ST, SUITE 503B
BOSTON, MA 02114
Psychiatry & Neurology (Psychiatry)
50 STANIFORD ST, 4TH FLOOR
BOSTON, MA 02114
Ophthalmology
50 STANIFORD ST, SUITE 600
BOSTON, MA 02114
Internal Medicine (Endocrinology, Diabetes & Metabolism)
50 STANIFORD ST, 3RD FLOOR S50 3
BOSTON, MA 02114
Pathology (Clinical Pathology/Laboratory Medicine)
50 STANIFORD ST, 3RD FLOOR S50 3 DIABETES UNIT
BOSTON, MA 02114
Anesthesiology
50 STANIFORD ST, C/O MA ANESTHESIA CORP
BOSTON, MA 02114
Internal Medicine
50 STANIFORD ST, SUITE 503B
BOSTON, MA 02114
Internal Medicine (Nephrology)
50 STANIFORD ST, 7TH FLOOR, LAB OF COMPUTER SCIENCE
BOSTON, MA 02114
Internal Medicine
50 STANIFORD ST, MGH INPATIENT CLINICIAN EDUCATOR SERVICE
BOSTON, MA 02114
Optometrist
50 STANIFORD ST, SUITE 600
BOSTON, MA 02114
Ophthalmology
50 STANIFORD ST, THIRD FLOOR
BOSTON, MA 02114
Dentist (General Practice)
50 STANIFORD ST, 8TH FLOOR
BOSTON, MA 02114
Internal Medicine
50 STANIFORD ST, SUITE 300
BOSTON, MA 02114
Psychiatry & Neurology (Psychiatry)
50 STANIFORD ST
BOSTON, MA 02114
Internal Medicine
50 STANIFORD ST, SUITE 503B
BOSTON, MA 02114

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1952429532, enumerated as an "individual" on March 26, 2007.

The provider is located at 50 STANIFORD ST MGH ARMS PROGRAM BOSTON, MA 02114 and the phone number is (617) 726-2241.

Psychiatry & Neurology with taxonomy code 2084P0804X and a focus in Child & Adolescent Psychiatry.