MRS. MARILYN MCNAMARA HAMERSTADT LMHC
NPI 1124353735
Counselor - Mental Health in Carmel, IN

NPI Status: Active since October 15, 2009

Contact Information

301 E CARMEL DR
CARMEL, IN
ZIP 46032
Phone: (317) 581-1013

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  • Individual
  • Female
  • Counselor
  • Mental Health

About MARILYN HAMERSTADT

This page provides the complete NPI Profile along with additional information for Marilyn Hamerstadt, a provider established in Carmel, Indiana with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1124353735 assigned on October 2009. The practitioner's primary taxonomy code is 101YM0800X with license number 39001714A (IN). The provider is registered as an individual and her NPI record was last updated 16 years ago.

NPI
1124353735
Provider Name
MRS. MARILYN MCNAMARA HAMERSTADT LMHC
Gender
Female
Entity Type
Individual
Location Address
301 E CARMEL DR CARMEL, IN 46032
Location Phone
(317) 581-1013
Mailing Address
301 E CARMEL DR CARMEL, IN 46032
Mailing Phone
(317) 581-1013
Is Sole Proprietor?
Yes
Enumeration Date
10-15-2009
Last Update Date
11-18-2010
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A mental health counselor like Marilyn Hamerstadt provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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

Counselor Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License No.
39001714A
License State
IN

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)
1101YA0400XBehavioral Health & Social Service Providers

Counselor
Addiction (Substance Use Disorder)

00180 (IN)

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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 1124353735, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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
1
Unchanged
Pos 3
2
Doubled → 4
Pos 4
4
Unchanged
Pos 5
3
Doubled → 6
Pos 6
5
Unchanged
Pos 7
3
Doubled → 6
Pos 8
7
Unchanged
Pos 9
3
Doubled → 6
Check
5
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 2 → 4 3 → 6 3 → 6 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 4 + 4 + 6 + 5 + 6 + 7 + 6 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1124353735.

Other Providers at the Same Location


The following 9 providers are registered at the same or a nearby location.

Optometrist
301 E CARMEL DR, SUITE F-300
CARMEL, IN 46032
Community/Behavioral Health
301 E CARMEL DR, STE D400
CARMEL, IN 46032
Counselor (Mental Health)
301 E CARMEL DR
CARMEL, IN 46032
Pain Medicine (Interventional Pain Medicine)
301 E CARMEL DR, SUITE D-100
CARMEL, IN 46032
Social Worker (Clinical)
301 E CARMEL DR
CARMEL, IN 46032
Optometrist
301 E CARMEL DR, BUILDING F, SUITE 300
CARMEL, IN 46032
Dentist (General Practice)
301 E CARMEL DR, SUITE H100
CARMEL, IN 46032
Clinic/Center (Radiology)
301 E CARMEL DR, STE. D200
CARMEL, IN 46032
Nurse Practitioner (Family)
301 E CARMEL DR
CARMEL, IN 46032

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1124353735, enumerated as an "individual" on October 15, 2009.

The provider is located at 301 E CARMEL DR CARMEL, IN 46032 and the phone number is (317) 581-1013.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.