LEAH CHRISTINA THERRES PA-C
NPI 1770427577
Physician Assistant in Annapolis, MD

NPI Status: Active since April 14, 2026

Contact Information

2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD
ZIP 21401
Phone: (410) 268-8862

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  • Individual
  • Female
  • Physician Assistant

About LEAH THERRES

This page provides the complete NPI Profile along with additional information for Leah Therres, a primary care provider established in Annapolis, Maryland with a medical specialization in Physician Assistant. The healthcare provider is registered in the NPI registry with number 1770427577 assigned on April 2026. The practitioner's primary taxonomy code is 363A00000X with license number C0010431 (MD). The provider is registered as an individual and her NPI record was last updated April 2026.

NPI
1770427577
Provider Name
LEAH CHRISTINA THERRES PA-C
Gender
Female
Entity Type
Individual
Location Address
2000 MEDICAL PKWY STE 101 ANNAPOLIS, MD 21401
Location Phone
(410) 268-8862
Mailing Address
2000 MEDICAL PKWY STE 101 ANNAPOLIS, MD 21401
Is Sole Proprietor?
No
Enumeration Date
04-14-2026
Last Update Date
04-14-2026
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A primary care provider (PCP) like Leah Therres sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, etc .

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

Physician Assistant

Taxonomy Code
363A00000X
Type
Physician Assistants & Advanced Practice Nursing Providers
License No.
C0010431
License State
MD
Taxonomy Description
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

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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 1770427577, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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
7
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
0
Unchanged
Pos 5
4
Doubled → 8
Pos 6
2
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
5
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
7
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 4 → 8 7 → 14 → 5 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 4 + 0 + 8 + 2 + 1 + 4 + 5 + 1 + 4 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1770427577.

Other Providers at the Same Location


The following 14 providers are registered at the same or a nearby location.

Nurse Practitioner
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Physician Assistant
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Orthopaedic Surgery
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Physical Therapist
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Nurse Practitioner
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Physician Assistant
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Physician Assistant
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Physician Assistant
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Clinic/Center
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Physician Assistant
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Physician Assistant (Surgical)
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Physician Assistant
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Clinic/Center
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401
Durable Medical Equipment & Medical Supplies
2000 MEDICAL PKWY STE 101
ANNAPOLIS, MD 21401

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1770427577, enumerated as an "individual" on April 14, 2026.

The provider is located at 2000 MEDICAL PKWY STE 101 ANNAPOLIS, MD 21401 and the phone number is (410) 268-8862.

Physician Assistant with taxonomy code 363A00000X.