MARIA CECILIA DAHN M.D.
NPI 1942491519
Psychiatry & Neurology - Child & Adolescent Psychiatry in Oak Park, IL

NPI Status: Active since August 07, 2007

Contact Information

1103 WESTGATE ST
#203
OAK PARK, IL
ZIP 60301
Phone: (773) 517-7873

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  • Individual
  • Female
  • Psychiatry & Neurology
  • Child & Adolescent Psychiatry
  • PECOS Enrolled
  • Opted-Out Medicare

About MARIA DAHN

This page provides the complete NPI Profile along with additional information for Maria Dahn, a provider established in Oak Park, Illinois with a medical specialization in Psychiatry & Neurology, focusing in child & adolescent psychiatry . The healthcare provider is registered in the NPI registry with number 1942491519 assigned on August 2007. The practitioner's primary taxonomy code is 2084P0804X with license number 036114820 (IL). The provider is registered as an individual and her NPI record was last updated 15 years ago.

NPI
1942491519
Provider Name
MARIA CECILIA DAHN M.D.
Gender
Female
Entity Type
Individual
Location Address
1103 WESTGATE ST #203 OAK PARK, IL 60301
Location Phone
(773) 517-7873
Mailing Address
1103 WESTGATE ST #203 OAK PARK, IL 60301
Mailing Phone
(773) 517-7873
Is Sole Proprietor?
Yes
Enumeration Date
08-07-2007
Last Update Date
05-09-2011
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The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. Maria Dahn opted out of Medicare effective on 01-25-2018 until 01-25-2026. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare but is permitted to order and refer services to other healthcare providers.

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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.
036114820
License State
IL
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.

Medicare Participation & PECOS Enrollment Status

Maria Dahn is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • Opted-Out of Medicare? Yes

  • Opt-Out Effective Date: 01-25-2018

  • Opt-Out End Date: 01-25-2026

  • Eligible to Order and Refer? Yes

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

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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 1942491519, 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
9
Unchanged
Pos 3
4
Doubled → 8
Pos 4
2
Unchanged
Pos 5
4
Doubled → 8
Pos 6
9
Unchanged
Pos 7
1
Doubled → 2
Pos 8
5
Unchanged
Pos 9
1
Doubled → 2
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 4 → 8 4 → 8 1 → 2 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 8 + 2 + 8 + 9 + 2 + 5 + 2 + 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 1942491519.

Other Providers at the Same Location


The following 6 providers are registered at the same or a nearby location.

Social Worker (Clinical)
1103 WESTGATE ST, SUITE 200
OAK PARK, IL 60301
Social Worker (Clinical)
1103 WESTGATE ST
OAK PARK, IL 60301
Psychologist (Clinical)
1103 WESTGATE ST, SUITE 200
OAK PARK, IL 60301
Social Worker (Clinical)
1103 WESTGATE ST, SUITE 200
OAK PARK, IL 60301
Clinic/Center
1103 WESTGATE ST, 203
OAK PARK, IL 60301
Psychologist (Clinical)
1103 WESTGATE ST, SUITE 200
OAK PARK, IL 60301

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1942491519, enumerated as an "individual" on August 07, 2007.

The provider is located at 1103 WESTGATE ST #203 OAK PARK, IL 60301 and the phone number is (773) 517-7873.

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