THOMAS DAG HORN MD
NPI 1275620320
Dermatology in Boston, MA

NPI Status: Active since October 09, 2006

Contact Information

55 FRUIT ST
BOSTON, MA
ZIP 02114
Phone: (176) 658-9300

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  • Individual
  • Male
  • Years of Experience 44
  • Dermatology
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About THOMAS HORN

This page provides the complete NPI Profile along with additional information for Thomas Horn, a provider established in Boston, Massachusetts with a medical specialization in Dermatology and more than 44 years of experience. He graduated from University Of Virginia School Of Medicine in 1982. The healthcare provider is registered in the NPI registry with number 1275620320 assigned on October 2006. The practitioner's primary taxonomy code is 207N00000X with license number E-1269 (AR). The provider is registered as an individual and his NPI record was last updated 7 years ago.

NPI
1275620320
Provider Name
THOMAS DAG HORN MD
Gender
Male
Entity Type
Individual
Location Address
55 FRUIT ST BOSTON, MA 02114
Location Phone
(176) 658-9300
Mailing Address
55 FRUIT ST BOSTON, MA 02114
Mailing Phone
(176) 586-9300
Medical School Name
UNIVERSITY OF VIRGINIA SCHOOL OF MEDICINE
Graduation Year
1982
Is Sole Proprietor?
No
Enumeration Date
10-09-2006
Last Update Date
09-16-2019
Code Navigator

A dermatologist like Thomas Horn is a medical specialty involving the management of skin conditions and diseases. Dermatologists diagnose some sexually transmitted diseases, warts, cancer, acne, dermatitis and may offer cosmetic treatments, and therapies that reduce age spots and wrinkles.

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

Dermatology

Taxonomy Code
207N00000X
Type
Allopathic & Osteopathic Physicians
License No.
E-1269
License State
AR
Taxonomy Description
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

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)
1207ND0900XAllopathic & Osteopathic Physicians

Dermatology
Dermatopathology

E-1269 (AR)

Insurance Plans Accepted

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

  • Anthem Bronze Access Blue New England HMO 6000/20%/8000 w/HSA - HMO
  • Anthem Bronze Access Blue New England HMO 7000/50%/8000 w/HSA - HMO
  • Anthem Bronze Access Blue New England HMO 7500/30%/10000 Value - HMO
  • Anthem Bronze Access Blue New England HMO 8500/50%/9200 - HMO
  • Anthem Gold Access Blue New England HMO 1000/20%/7500 - HMO
  • Anthem Gold Access Blue New England HMO 2000/0%/6500 RxD - HMO
  • Anthem Gold Access Blue New England HMO 2000/10%/4600 w/HSA - HMO
  • Anthem Gold Access Blue New England HMO 2000/10%/7500 - HMO
  • Anthem Gold Access Blue New England HMO 2000/20%/4600 w/HSA - HMO
  • Anthem Gold Access Blue New England HMO 3000/0%/7500 RxD - HMO
  • Anthem Gold Access Blue New England HMO 500/30%/9000 - HMO
  • Anthem Platinum Access Blue New England HMO 250/10%/3500 - HMO
  • Anthem Silver Access Blue New England HMO 2500/30%/10000 Value - HMO
  • Anthem Silver Access Blue New England HMO 3000/30%/9000 Value - HMO
  • Anthem Silver Access Blue New England HMO 3500/20%/10000 - HMO
  • Anthem Silver Access Blue New England HMO 3500/20%/7250 w/HSA - HMO
  • Anthem Silver Access Blue New England HMO 4000/0%/9000 - HMO
  • Anthem Silver Access Blue New England HMO 4000/0%/9000 RxD - HMO
  • Anthem Silver Access Blue New England HMO 4000/10%/7250 w/HSA - HMO
  • Anthem Silver Access Blue New England HMO 4000/20%/8500 - HMO

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

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

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
131654001MEDICAID (05)AR 

Medicare Participation & PECOS Enrollment Status

Thomas Horn 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.

Thomas Horn 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: 3476650763

    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: I20070522000102

    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.

Antibody evaluation, each additional single antibody stain procedure

An antibody evaluation involves testing a sample of your body fluid (like blood) to identify specific antibodies. Each additional single antibody stain procedure is a separate test for another specific antibody. This helps in diagnosing various health conditions by understanding your body's immune response.

This service was performed 63 times for 15 patients

Antibody evaluation, initial single antibody stain procedure

An antibody evaluation, initial single antibody stain procedure is a laboratory test. It's designed to identify specific proteins, or antibodies, in your body. This can help diagnose certain conditions or monitor your immune system's response to treatments. The procedure involves staining a single type of antibody for detection.

This service was performed 16 times for 15 patients

Pathology examination of tissue using a microscope, intermediate complexity

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

This service was performed 4,054 times for 2,571 patients

Pathology examination of tissue using a microscope, moderately low complexity

A pathology examination of tissue, moderately low complexity, involves studying a small sample of your body tissue under a microscope. It helps to identify any abnormal cells or diseases. It's a routine procedure, not complex, and provides crucial insights for your diagnosis.

This service was performed 98 times for 87 patients

Special stained specimen slides to examine tissue, each additional procedure

Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.

This service was performed 141 times for 41 patients

Special stained specimen slides to examine tissue, initial procedure

This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.

This service was performed 104 times for 94 patients

Special stained specimen slides to identify organisms including interpretation and report

This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.

This service was performed 51 times for 40 patients

Surgical pathology consultation and report on referred slides prepared elsewhere

A surgical pathology consultation involves reviewing slides prepared at a different lab to confirm or clarify a diagnosis. It's a second opinion to ensure accuracy. A report with findings and interpretations is then provided for your doctor's reference.

This service was performed 51 times for 50 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $24.41 for a new patient copayment and $19.71 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 02114 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99203

  • Average New Patient Price $97.64
  • Minimum New Patient Price $63.72
  • Maximum New Patient Price $189.86
  • Average New Patient Copayment $24.41
  • Minimum New Patient Copayment $15.93
  • Maximum New Patient Copayment $47.46

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $78.84
  • Minimum Established Patient Price $21.07
  • Maximum Established Patient Price $155.29
  • Average Established Patient Copayment $19.71
  • Minimum Established Patient Copayment $5.26
  • Maximum Established Patient Copayment $38.82

* 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.

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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 1275620320, we treat the final digit (0) 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 50. The final step is to find the difference between that total and the next multiple of ten (50 - 50 = 0).

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
2
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
5
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
2
Unchanged
Pos 7
0
Doubled → 0
Pos 8
3
Unchanged
Pos 9
2
Doubled → 4
Check
0
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 6 → 12 → 3 0 → 0 2 → 4

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 + 1 + 2 + 2 + 0 + 3 + 4 + 24 = 50

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

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

50 - 50 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1275620320.

Other Providers at the Same Location


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

Internal Medicine (Gastroenterology)
55 FRUIT ST
BOSTON, MA 02114
Psychiatry & Neurology (Psychiatry)
55 FRUIT ST, WARREN 1220
BOSTON, MA 02114
Internal Medicine (Gastroenterology)
55 FRUIT ST
BOSTON, MA 02114
Internal Medicine
55 FRUIT ST, 4710B
BOSTON, MA 02114
Thoracic Surgery (Cardiothoracic Vascular Surgery)
55 FRUIT ST, BUL 119
BOSTON, MA 02114
Thoracic Surgery (Cardiothoracic Vascular Surgery)
55 FRUIT ST, MGH, BULFINCH 2
BOSTON, MA 02114
Urology
55 FRUIT ST, GRB 1102
BOSTON, MA 02114
Anesthesiology
55 FRUIT ST, CLN 3
BOSTON, MA 02114
Orthopaedic Surgery
55 FRUIT ST, YAW 3E ORTHOPAEDIC ASSOCIATES
BOSTON, MA 02114
Pathology (Anatomic Pathology)
55 FRUIT ST, PATHOLOGY ASSOCIATES WRN 2
BOSTON, MA 02114
Pathology (Anatomic Pathology & Clinical Pathology)
55 FRUIT ST, GRB 5 PATHOLOGY ASSOCIATES
BOSTON, MA 02114
Psychologist
55 FRUIT ST, YAW 6A MASSACHUSSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Internal Medicine (Pulmonary Disease)
55 FRUIT ST
BOSTON, MA 02114
Anesthesiology (Pain Medicine)
55 FRUIT ST, CLN 309 ANESTHESIA ASSOCIATES
BOSTON, MA 02114
Internal Medicine (Endocrinology, Diabetes & Metabolism)
55 FRUIT ST, WEL 5
BOSTON, MA 02114
Internal Medicine
55 FRUIT ST, INFECTIOUS DISEASE ASSOCIATES GRJ 504
BOSTON, MA 02114
Psychiatry & Neurology (Psychiatry)
55 FRUIT ST, S50 4 MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Anesthesiology
55 FRUIT ST, CLN 3
BOSTON, MA 02114
Internal Medicine (Infectious Disease)
55 FRUIT ST, FND 8 INFECTIOUS DISEASE ASSOCIATES
BOSTON, MA 02114
Anesthesiology (Critical Care Medicine)
55 FRUIT ST, ANESTHESIA ASSOCIATES GRB 406E
BOSTON, MA 02114

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1275620320, enumerated as an "individual" on October 09, 2006.

The provider is located at 55 FRUIT ST BOSTON, MA 02114 and the phone number is (176) 658-9300.

Dermatology with taxonomy code 207N00000X.

The provider might be accepting Accepts: Anthem Blue Cross and Blue Shield, Medicare and. Please consult your insurance carrier or call the provider to verify.