DR. DOUGLAS W SCHREYACK M.D.
NPI 1861589418
Podiatrist - Primary Podiatric Medicine in Durham, NC

NPI Status: Active since October 06, 2006

Contact Information

4101 N ROXBORO ST
DURHAM, NC
ZIP 27704
Phone: (919) 684-8111

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  • Individual
  • Male
  • Years of Experience 35
  • Podiatrist
  • Primary Podiatric Medicine
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About DOUGLAS SCHREYACK

This page provides the complete NPI Profile along with additional information for Douglas Schreyack, a provider established in Durham, North Carolina with a medical specialization in Podiatrist, focusing in primary podiatric medicine and more than 35 years of experience. He graduated from California School Of Podiatric Medicine in 1991. The healthcare provider is registered in the NPI registry with number 1861589418 assigned on October 2006. The practitioner's primary taxonomy code is 213EP1101X with license number 331 (NC). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1861589418
Provider Name
DR. DOUGLAS W SCHREYACK M.D.
Gender
Male
Entity Type
Individual
Location Address
4101 N ROXBORO ST DURHAM, NC 27704
Location Phone
(919) 684-8111
Mailing Address
4101 N ROXBORO ST DURHAM, NC 27704
Mailing Phone
(919) 684-8111
Medical School Name
CALIFORNIA SCHOOL OF PODIATRIC MEDICINE
Graduation Year
1991
Is Sole Proprietor?
No
Enumeration Date
10-06-2006
Last Update Date
12-10-2025
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A podiatrist like Douglas Schreyack provides medical and surgical care for people with foot, ankle, and lower leg issues. Podiatrists treat foot and ankle ailments like calluses, ingrown toenails, heel spurs, arthritis, congenital foot deformities, foot problems associated with diabetes and arch problems.

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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

Podiatrist Primary Podiatric Medicine

Taxonomy Code
213EP1101X
Type
Podiatric Medicine & Surgery Service Providers
License No.
331
License State
NC

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • Elite Bronze - HMO
  • Elite Bronze + Vision + Adult Dental - HMO
  • Everyday Bronze - HMO
  • Everyday Bronze + Vision + Adult Dental - HMO
  • Focused Silver - HMO
  • Standard Expanded Bronze - HMO
  • Standard Gold - HMO
  • Standard Silver - HMO
  • Standard Silver + Vision + Adult Dental - HMO
  • Clear Silver with $0 Insulin Options - HMO
  • Complete Gold - HMO
  • Complete Gold + Vision + Adult Dental - HMO
  • Complete Gold with Atrium Health - HMO
  • Complete Gold with Atrium Health + Vision + Adult Dental - HMO
  • Elite Bronze - HMO
  • Elite Bronze + Vision + Adult Dental - HMO
  • Elite Bronze with Atrium Health - HMO
  • Elite Bronze with Atrium Health + Vision + Adult Dental - HMO
  • Enhanced Asthma/COPD Care Silver with $0 Drug Options - HMO
  • Enhanced Asthma/COPD Care Silver with $0 Drug Options + Vision + Adult Dental - HMO
  • Everyday Bronze - HMO
  • Everyday Bronze + Vision + Adult Dental - HMO
  • Everyday Bronze with Atrium Health - HMO
  • Everyday Bronze with Atrium Health + Vision + Adult Dental - HMO
  • Focused Silver with Atrium Health - HMO
  • Focused Silver with Atrium Health + Vision + Adult Dental - HMO
  • Standard Expanded Bronze - HMO
  • Standard Expanded Bronze + Vision + Adult Dental - HMO
  • Standard Expanded Bronze with Atrium Health - HMO
  • Elite Bronze - EPO
  • Elite Bronze + Vision + Adult Dental - EPO
  • Elite Gold - EPO
  • Elite Gold + Vision + Adult Dental - EPO
  • Enhanced Diabetes Care Silver with $0 Drug Options - EPO
  • Enhanced Diabetes Care Silver with $0 Drug Options + Vision + Adult Dental - EPO
  • Everyday Bronze - EPO
  • Everyday Bronze + Vision + Adult Dental - EPO
  • Everyday Gold - EPO
  • Everyday Gold + Vision + Adult Dental - EPO
  • Standard Expanded Bronze - EPO
  • Standard Expanded Bronze + Vision + Adult Dental - EPO
  • Standard Gold - EPO
  • Standard Gold + Vision + Adult Dental - EPO
  • Standard Silver - EPO
  • Standard Silver + Vision + Adult Dental - EPO
  • Blue Advantage Bronze Basic | 3 Free PCP | $25 Tier 1 Rx | Integrated | Nationwide Doctors - PPO
  • Blue Advantage Bronze Complete | $60 PCP | $20 Tier 1 Rx | Nationwide Doctors - PPO
  • Blue Advantage Bronze HSA Eligible | Integrated | Nationwide Doctors - PPO
  • Blue Advantage Bronze Standard | Nationwide Doctors - PPO
  • Blue Advantage Gold Premier A | 3 Free PCP | $10 Tier 1 Rx | Nationwide Doctors - PPO
  • Blue Advantage Gold Standard A | Nationwide Doctors - PPO
  • Blue Advantage Silver Choice A | 3 Free PCP | $15 Tier 1 Rx | Nationwide Doctors - PPO
  • Blue Advantage Silver Preferred | 3 Free PCP | $10 Tier 1 Rx | Integrated | Nationwide Doctors - PPO
  • Blue Advantage Silver Standard | Nationwide Doctors - PPO
  • Blue Care Bronze Basic | 3 Free PCP | $25 Tier 1 Rx | Integrated | Statewide Doctors - HMO
  • Blue Care Bronze Complete | $60 PCP | $20 Tier 1 Rx | Statewide Doctors - HMO
  • Blue Care Bronze HSA Eligible | Integrated | Statewide Doctors - HMO
  • Blue Care Bronze Standard | Statewide Doctors - HMO
  • Blue Care Gold Premier A | 3 Free PCP | $10 Tier 1 Rx | Statewide Doctors - HMO
  • Blue Care Gold Standard A | Statewide Doctors - HMO
  • Blue Care Silver Choice A | 3 Free PCP | $15 Tier 1 Rx | Statewide Doctors - HMO
  • Blue Care Silver Preferred | 3 Free PCP | $10 Tier 1 Rx | Integrated | Statewide Doctors - HMO
  • Blue Care Silver Standard | Statewide Doctors - HMO
  • Blue Home Bronze Basic | 3 Free PCP | $25 Tier 1 Rx | Integrated | with Cone Health - EPO
  • Blue Home Bronze Standard | with Cone Health - EPO

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Medicare Participation & PECOS Enrollment Status

Douglas Schreyack is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Douglas Schreyack 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) and a Home Health Agency (HHA).

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

  • PECOS PAC ID: 840250684

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20041015000184

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • 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: No

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Orthotic Devices

  • DME-Orthotic Devices (DF003N)

    Walking boot, pneumatic and/or vacuum, with or without joints, with or without interface material, prefabricated, off-the-shelf (HCPCS:L4361)

    1 DME suppliers used 12 Medicare Claims 12 Services Paid

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.

Correction of bunion

A bunion correction is a surgical procedure to realign the bone, ligaments, tendons, and nerves so your big toe can be brought back to its correct position. This procedure reduces foot pain and improves balance and foot function.

This service was performed 11 times for 11 patients

Correction of toe joint deformity

Correction of toe joint deformity is a procedure to fix misshapen toe joints. This can involve realigning the bones, removing bone or tissue, or implanting devices to improve joint function. It can help reduce pain and improve mobility.

This service was performed 35 times for 15 patients

Established patient office or other outpatient visit, 10-19 minutes

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

This service was performed 449 times for 227 patients

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 292 times for 216 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 45 times for 41 patients

Fusion of big toe at joint with foot

Fusion of the big toe at the joint with the foot, also known as arthrodesis, is a surgical procedure aimed at relieving pain and improving stability. It involves permanently connecting the bones of the big toe and foot, which can limit movement but often enhances comfort and function.

This service was performed 13 times for 13 patients

New patient office or other outpatient visit, 15-29 minutes

This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.

This service was performed 12 times for 12 patients

New patient office or other outpatient visit, 30-44 minutes

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

This service was performed 375 times for 375 patients

New patient office or other outpatient visit, 45-59 minutes

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

This service was performed 66 times for 66 patients

Permanent removal fingernail or toenail

Permanent removal of a fingernail or toenail, also known as avulsion, is a procedure performed to treat nail infections or severe ingrown nails. The nail is carefully removed under local anesthesia. After removal, a chemical is applied to prevent nail regrowth, ensuring the issue does not recur.

This service was performed 48 times for 39 patients

Removal of fingernails or toenails, 6 or more nails

This procedure involves the removal of six or more fingernails or toenails. It's typically done to treat severe nail infections, persistent pain, or abnormal nail growth. Local anesthesia is used to minimize discomfort. Healing usually takes a few weeks.

This service was performed 231 times for 142 patients

Removal of skin and tissue, 20.0 sq cm or less

This procedure involves the surgical removal of skin and tissue, up to 20.0 square cm in size. It's often performed to treat conditions like skin cancer or to remove moles, warts, and other skin lesions. The area is numbed and the unwanted tissue is carefully cut out.

This service was performed 62 times for 15 patients

Removal of tissue from wound, 20.0 sq cm or less

This procedure involves the careful removal of damaged or infected tissue from a wound that's 20.0 square cm or less. It's done to promote healing and prevent further infection. The process is carried out under local anesthesia, ensuring minimal discomfort.

This service was performed 58 times for 34 patients

X-ray of foot, minimum of 3 views

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

This service was performed 528 times for 226 patients

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Douglas Schreyack is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
DUKE UNIVERSITY HOSPITAL2100 ERWIN RD
DURHAM, NC 27705
(919) 684-8111Acute Care Hospitals
DUKE REGIONAL HOSPITAL3643 N ROXBORO STREET
DURHAM, NC 27704
(919) 470-4000Acute Care Hospitals

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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 1861589418, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
8
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
1
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
8
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
4
Unchanged
Pos 9
1
Doubled → 2
Check
8
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 6 → 12 → 3 5 → 10 → 1 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 + 8 + 1 + 2 + 1 + 1 + 0 + 8 + 1 + 8 + 4 + 2 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1861589418.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Internal Medicine (Geriatric Medicine)
4101 N ROXBORO ST
DURHAM, NC 27704
Anesthesiology
4101 N ROXBORO ST
DURHAM, NC 27704
Psychologist (Clinical)
4101 N ROXBORO ST
DURHAM, NC 27704
Urology
4101 N ROXBORO ST
DURHAM, NC 27704
Physician Assistant
4101 N ROXBORO ST
DURHAM, NC 27704
Nurse Practitioner
4101 N ROXBORO ST
DURHAM, NC 27704
Nurse Practitioner
4101 N ROXBORO ST
DURHAM, NC 27704
Internal Medicine
4101 N ROXBORO ST
DURHAM, NC 27704
Orthopaedic Surgery
4101 N ROXBORO ST
DURHAM, NC 27704
Speech-Language Pathologist
4101 N ROXBORO ST
DURHAM, NC 27704
Pediatrics (Neonatal-Perinatal Medicine)
4101 N ROXBORO ST
DURHAM, NC 27704
Internal Medicine (Cardiovascular Disease)
4101 N ROXBORO ST
DURHAM, NC 27704
Internal Medicine
4101 N ROXBORO ST
DURHAM, NC 27704
Pediatrics
4101 N ROXBORO ST
DURHAM, NC 27704
Pediatrics (Pediatric Infectious Diseases)
4101 N ROXBORO ST
DURHAM, NC 27704
Ophthalmology
4101 N ROXBORO ST
DURHAM, NC 27704
Emergency Medicine
4101 N ROXBORO ST
DURHAM, NC 27704
Orthopaedic Surgery
4101 N ROXBORO ST
DURHAM, NC 27704
Ophthalmology
4101 N ROXBORO ST
DURHAM, NC 27704
Pediatrics
4101 N ROXBORO ST
DURHAM, NC 27704

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1861589418, enumerated as an "individual" on October 06, 2006.

The provider is located at 4101 N ROXBORO ST DURHAM, NC 27704 and the phone number is (919) 684-8111.

Podiatrist with taxonomy code 213EP1101X and a focus in Primary Podiatric Medicine.

The provider might be accepting Accepts: Ambetter from Absolute Total Care, Ambetter of. Please consult your insurance carrier or call the provider to verify.

Douglas Schreyack is affiliated with: DUKE UNIVERSITY HOSPITAL and DUKE REGIONAL HOSPITAL.