ALAN CARLSON M.D.
NPI 1124181995
Internal Medicine - Hematology in Durham, NC

NPI Status: Active since December 19, 2006

Contact Information

2100 ERWIN RD
DURHAM, NC
ZIP 27710
Phone: (919) 620-4467

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  • Individual
  • Male
  • Years of Experience 45
  • Internal Medicine
  • Hematology
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About ALAN CARLSON

This page provides the complete NPI Profile along with additional information for Alan Carlson, an internist established in Durham, North Carolina with a medical specialization in Internal Medicine, focusing in hematology and more than 45 years of experience. He graduated from Duke University School Of Medicine in 1981. The healthcare provider is registered in the NPI registry with number 1124181995 assigned on December 2006. The practitioner's primary taxonomy code is 207RH0000X with license number 30893 (NC). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1124181995
Provider Name
ALAN CARLSON M.D.
Gender
Male
Entity Type
Individual
Location Address
2100 ERWIN RD DURHAM, NC 27710
Location Phone
(919) 620-4467
Mailing Address
2100 ERWIN RD DUKE UNIVERSITY MEDICAL CENTER - DUMC 3802 DURHAM, NC 27710
Medical School Name
DUKE UNIVERSITY SCHOOL OF MEDICINE
Graduation Year
1981
Is Sole Proprietor?
No
Enumeration Date
12-19-2006
Last Update Date
09-11-2025
Code Navigator

An internist like Alan Carlson is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, 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

Internal Medicine Hematology

Taxonomy Code
207RH0000X
Type
Allopathic & Osteopathic Physicians
License No.
30893
License State
NC
Taxonomy Description
An internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma.

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)
1207V00000XAllopathic & Osteopathic Physicians

Obstetrics & Gynecology

30893 (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

Alan Carlson 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.

Alan Carlson 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

  • PECOS PAC ID: 1658409339

    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: I20100518000169

    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: 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.

Cataract surgery

Cataract surgery is a procedure to remove the lens of your eye when it becomes cloudy, which is called a cataract. A synthetic lens is then inserted to restore clear vision. The operation is typically done on an outpatient basis and is very safe and effective.

This service was performed for 46 patients

Established patient complete exam of visual system

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

This service was performed 137 times for 133 patients

Established patient problem focused exam of visual system

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

This service was performed 140 times for 111 patients

Imaging of optic nerve

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

This service was performed 17 times for 17 patients

Imaging of retina

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

This service was performed 11 times for 11 patients

New patient complete exam of visual system

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

This service was performed 20 times for 20 patients

New patient problem focused exam of visual system

A new patient problem-focused exam of the visual system is a basic evaluation of your eyes and vision. It includes checking your eye movements, visual acuity, and general eye health. It helps detect any potential issues early for timely treatment.

This service was performed 26 times for 26 patients

Photography of content of eyes

Photography of the content of eyes, also known as ocular photography, captures detailed images of different parts of the eye. It helps identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. The process is non-invasive and painless.

This service was performed 19 times for 19 patients

Removal of recurring cataract in lens capsule using a laser

This procedure, known as YAG laser capsulotomy, treats cloudiness in the lens capsule following cataract surgery. A laser is used to create a small hole in the cloudy capsule, allowing light to pass through and restore clear vision. It's a quick, painless procedure.

This service was performed 20 times for 20 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $41.27 for a new patient copayment and $23.98 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 27710 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99205

  • Average New Patient Price $165.09
  • Minimum New Patient Price $54.12
  • Maximum New Patient Price $165.09
  • Average New Patient Copayment $41.27
  • Minimum New Patient Copayment $13.53
  • Maximum New Patient Copayment $41.27

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $95.94
  • Minimum Established Patient Price $17.21
  • Maximum Established Patient Price $134.61
  • Average Established Patient Copayment $23.98
  • Minimum Established Patient Copayment $4.3
  • Maximum Established Patient Copayment $33.65

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

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. Alan Carlson 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

Reviews for ALAN CARLSON M.D.

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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 1124181995, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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
1
Unchanged
Pos 3
2
Doubled → 4
Pos 4
4
Unchanged
Pos 5
1
Doubled → 2
Pos 6
8
Unchanged
Pos 7
1
Doubled → 2
Pos 8
9
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
5
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 1 → 2 1 → 2 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 4 + 4 + 2 + 8 + 2 + 9 + 1 + 8 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1124181995.

Other Providers at the Same Location


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

Radiology (Radiation Oncology)
2100 ERWIN RD
DURHAM, NC 27710
Internal Medicine (Cardiovascular Disease)
2100 ERWIN RD
DURHAM, NC 27710
Colon & Rectal Surgery
2100 ERWIN RD
DURHAM, NC 27710
Thoracic Surgery (Cardiothoracic Vascular Surgery)
2100 ERWIN RD
DURHAM, NC 27710
Transplant Surgery
2100 ERWIN RD
DURHAM, NC 27710
Ophthalmology
2100 ERWIN RD
DURHAM, NC 27710
Dermatology
2100 ERWIN RD
DURHAM, NC 27710
Surgery (Surgical Oncology)
2100 ERWIN RD
DURHAM, NC 27710
Physician Assistant
2100 ERWIN RD
DURHAM, NC 27710
Internal Medicine (Infectious Disease)
2100 ERWIN RD
DURHAM, NC 27710
Pediatrics
2100 ERWIN RD
DURHAM, NC 27710
Pediatrics (Pediatric Hematology-Oncology)
2100 ERWIN RD
DURHAM, NC 27710
Internal Medicine
2100 ERWIN RD
DURHAM, NC 27710
Internal Medicine (Cardiovascular Disease)
2100 ERWIN RD
DURHAM, NC 27710
Optometrist
2100 ERWIN RD
DURHAM, NC 27710
Neurological Surgery
2100 ERWIN RD
DURHAM, NC 27710
Nurse Practitioner
2100 ERWIN RD
DURHAM, NC 27710
Emergency Medicine
2100 ERWIN RD
DURHAM, NC 27710
Nurse Practitioner
2100 ERWIN RD
DURHAM, NC 27710
Physician Assistant
2100 ERWIN RD
DURHAM, NC 27710

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1124181995, enumerated as an "individual" on December 19, 2006.

The provider is located at 2100 ERWIN RD DURHAM, NC 27710 and the phone number is (919) 620-4467.

Internal Medicine with taxonomy code 207RH0000X and a focus in Hematology.

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

Alan Carlson is affiliated with: DUKE UNIVERSITY HOSPITAL.