ELIZABETH CALLAHAN MD
NPI 1275049512
Behavior Technician in Vancouver, WA

NPI Status: Active since December 22, 2017

Contact Information

100 E 33RD ST STE 100
VANCOUVER, WA
ZIP 98663
Phone: (360) 514-7550
Fax: (360) 514-7587

NPI Profile Information
Primary Taxonomy
Secondary Taxonomies
Medicare Participation & PECOS Status
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Behavior Technician
PECOS Enrolled

About ELIZABETH CALLAHAN

This page provides the complete NPI Profile along with additional information for Elizabeth Callahan, a provider established in Vancouver, Washington with a medical specialization in Behavior Technician. The healthcare provider is registered in the NPI registry with number 1275049512 assigned on December 2017. The practitioner's primary taxonomy code is 106S00000X with license number ABA-IN-10185171 (OR). The provider is registered as an individual and her NPI record was last updated May 2026.

NPI: 1275049512
Provider Name: ELIZABETH CALLAHAN MD
Gender: Female
Entity Type: Individual
Location Address: 100 E 33RD ST STE 100 VANCOUVER, WA 98663
Location Phone: (360) 514-7550
Location Fax: (360) 514-7587
Mailing Address: 100 E 33RD ST STE 100 VANCOUVER, WA 98663
Mailing Phone: (360) 514-7560
Is Sole Proprietor?: No
Enumeration Date: 12-22-2017
Last Update Date: 05-27-2026
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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: Behavior Technician
Taxonomy Code: 106S00000X
Type: Behavioral Health & Social Service Providers
License No.: ABA-IN-10185171
License State: OR
Taxonomy Description: The behavior technician is a paraprofessional who practices under the close, ongoing supervision of a behavior analyst or assistant behavior analyst certified by the Behavior Analyst Certification Board and/or credentialed by a state (such as through licensure). The behavior technician is primarily responsible for the implementation of components of behavior-analytic treatment plans developed by the supervisor. That may include collecting data on treatment targets and conducting certain types of behavioral assessments (e.g., stimulus preference assessments). The behavior technician does not design treatment or assessment plans or procedures but provides services as assigned by the supervisor responsible for his or her work.

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)
1	207Q00000X	Allopathic & Osteopathic Physicians	Family Medicine	70123561 (WA)

Medicare Participation & PECOS Enrollment Status

Elizabeth Callahan 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
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

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 1275049512, 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 14 → 1 + 4

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 18 → 1 + 8

Pos 8

Unchanged

Pos 9

Doubled → 2

Check

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 7 → 14 → 5 0 → 0 9 → 18 → 9 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 4 + 5 + 0 + 4 + 1 + 8 + 5 + 2 + 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 1275049512.