ANN MCCULLOUGH EFREMOSKI PA
NPI 1023300456
Physician Assistant - Medical in Kissimmee, FL

NPI Status: Active since May 03, 2011

Contact Information

700 W OAK ST
KISSIMMEE, FL
ZIP 34741
Phone: (407) 518-5205

NPI Profile Information
Primary Taxonomy
Medicare Participation & PECOS Status
Areas of Expertise
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Physician Assistant
Medical
PECOS Enrolled

About ANN EFREMOSKI

This page provides the complete NPI Profile along with additional information for Ann Efremoski, a primary care provider established in Kissimmee, Florida with a medical specialization in Physician Assistant, focusing in medical . The healthcare provider is registered in the NPI registry with number 1023300456 assigned on May 2011. The practitioner's primary taxonomy code is 363AM0700X with license number 9105836 (FL). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1023300456
Provider Name: ANN MCCULLOUGH EFREMOSKI PA
Other Name Type: Former Name (1)
Gender: Female
Entity Type: Individual
Location Address: 700 W OAK ST KISSIMMEE, FL 34741
Location Phone: (407) 518-5205
Mailing Address: 8815 CONROY WINDERMERE RD # 305 ORLANDO, FL 32835
Mailing Phone: (260) 341-7765
Is Sole Proprietor?: No
Enumeration Date: 05-03-2011
Last Update Date: 09-14-2025
Code Navigator

A primary care provider (PCP) like Ann Efremoski 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 Medical
Taxonomy Code: 363AM0700X
Type: Physician Assistants & Advanced Practice Nursing Providers
License No.: 9105836
License State: FL

Medicare Participation & PECOS Enrollment Status

Ann Efremoski 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

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Initial hospital inpatient care per day, typically 70 minutes

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 1023300456, we treat the final digit (6) 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 44. The final step is to find the difference between that total and the next multiple of ten (50 - 44 = 6).

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 → 4

Pos 4

Unchanged

Pos 5

Doubled → 6

Pos 6

Unchanged

Pos 7

Doubled → 0

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 0

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 2 → 4 3 → 6 0 → 0 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 4 + 3 + 6 + 0 + 0 + 4 + 1 + 0 + 24 = 44

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

The next multiple of ten after 44 is 50. The difference is the calculated check digit.

50 - 44 = 6

This NPI is valid

The calculated check digit is 6, which matches the last digit of 1023300456.