DR. FRANCOIS MARC LAGACE MD
NPI 1821973173
Dermatology in Boston, MA
NPI Status: Active since August 06, 2025
This NPI profile has been added to the NPI registry within the last 30 days.
- Individual
- Male
- Dermatology
About FRANCOIS LAGACE
This page provides the complete NPI Profile along with additional information for Francois Lagace, a provider established in Boston, Massachusetts with a medical specialization in Dermatology. The healthcare provider is registered in the NPI registry with number 1821973173 assigned on August 2025. The practitioner's primary taxonomy code is 207N00000X with license number 3018715 (MA). The provider is registered as an individual and his NPI record was last updated August 2025.
- NPI
- 1821973173
- Provider Name
- DR. FRANCOIS MARC LAGACE MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 221 LONGWOOD AVE BOSTON, MA 02115
- Location Phone
- (617) 525-9496
- Mailing Address
- 1482 TREMONT ST APT W204 BOSTON, MA 02120
- Is Sole Proprietor?
- No
- Enumeration Date
- 08-06-2025
- Last Update Date
- 08-06-2025
- Code Navigator
A dermatologist like Francois Lagace 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
Secondary Locations
- 75 Francis St
Boston, MA 02115
(617) 732-5500 - 450 Brookline Ave
Boston, MA 02215
(617) 632-3000
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.
- 3018715
- License State
- MA
- 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.
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 8 | 2 | 1 | 9 | 7 | 3 | 1 | 7 | 3 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 8 | 4 | 1 | 18 | 7 | 6 | 1 | 14 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 8 + 4 + 1 + 1 + 8 + 7 + 6 + 1 + 1 + 4 + 24 = 67 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 67 = 3 | 3 | ||||||||
The NPI number 1821973173 is valid because the calculated check digit 3 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 20 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1396748463 | DR. NIKHEEL SHRINIVAS KOLATKAR M.D. Individual | Internal Medicine (Endocrinology, Diabetes & Metabolism) | 221 LONGWOOD AVE BOSTON, MA 02115 (617) 732-7947 |
| 1205827839 | DR. RANDALL H PAULSEN MD Individual | Psychiatry & Neurology (Psychiatry) | 221 LONGWOOD AVE MEZZANINE DEPT OF PSYCHIATRY BOSTON, MA 02115 (617) 732-6753 |
| 1720060916 | JEREMIAH M SCHARF MD PHD Individual | Psychiatry & Neurology (Neurology) | 221 LONGWOOD AVE BOSTON, MA 02115 (617) 732-8060 |
| 1922081553 | DR. KIRK R DAFFNER MD Individual | Psychiatry & Neurology (Neurology) | 221 LONGWOOD AVE BOSTON, MA 02115 (617) 732-8060 |
| 1699750604 | JEAN E MULDER MD Individual | Internal Medicine (Endocrinology, Diabetes & Metabolism) | 221 LONGWOOD AVE RFB2, ENDOCRINOLOGY DIABETES AND HYPERTENSION BOSTON, MA 02115 (617) 632-5100 |
| 1124096920 | DR. AARON PHILIP NELSON PH.D. Individual | Clinical Neuropsychologist | 221 LONGWOOD AVE BRIGHAM BEHAVIORAL NEUROLOGY GROUP BOSTON, MA 02115 (617) 732-8060 |
| 1881659464 | MEGHAN M SEARL PHD Individual | Psychologist | 221 LONGWOOD AVE BRIGHAM BEHAVIROAL NEUROLOGY BOSTON, MA 02115 (617) 732-8060 |
| 1740247121 | DAVID JEFFREY GELTMAN MD Individual | Psychiatry & Neurology (Psychiatry) | 221 LONGWOOD AVE BRIGHAM AND WOMENS HOSPITAL DEPARTMENT OF PSYCHIATRY BOSTON, MA 02115 (617) 732-8433 |
| 1871550137 | EDWARD MEIGS BROWN MD Individual | Internal Medicine (Endocrinology, Diabetes & Metabolism) | 221 LONGWOOD AVE BRIGHAM AND WOMEN HOSPITAL ENDOCRINOLOGY DIABETES BOSTON, MA 02115 (617) 732-5661 |
| 1053379099 | REENA KAPOOR M.D. Individual | Psychiatry & Neurology (Psychiatry) | 221 LONGWOOD AVE 4TH FL/PSYCHIATRY BOSTON, MA 02115 (617) 667-2300 |
| 1043267420 | DANIEL M GRIMES M.D. Individual | Psychiatry & Neurology (Psychiatry) | 221 LONGWOOD AVE BOSTON, MA 02115 (617) 667-2300 |
| 1720027832 | DR. JOHN ANDREW RAINIER GRIMALDI JR. M.D. Individual | Psychiatry & Neurology (Psychiatry) | 221 LONGWOOD AVE RF-M56 BOSTON, MA 02115 (617) 732-6753 |
| 1033155395 | DANIEL WILLIAM CRAMER MD SCD Individual | Obstetrics & Gynecology (Gynecology) | 221 LONGWOOD AVE BRIGHAM AND WOMENS HOSP DEPT OF OBSTETRICS AND GYNECOLO BOSTON, MA 02115 (617) 732-4895 |
| 1750311254 | LISA ANN CARBONE MD Individual | Psychiatry & Neurology (Psychiatry) | 221 LONGWOOD AVE BRIGHAM AND WOMENS HOSPITAL BOSTON, MA 02115 (617) 732-6750 |
| 1083647648 | BRIGHAM AND WOMENS PHYSICIANS ORGANIZATION INC Organization | Dermatology | 221 LONGWOOD AVE BOSTON, MA 02115 (617) 732-4918 |
| 1912932906 | SCOTT M MCGINNIS M.D. Individual | Psychiatry & Neurology (Neurology) | 221 LONGWOOD AVE M80 BOSTON, MA 02115 (617) 732-8060 |
| 1588762496 | LAURA J. MILLER Individual | Psychiatry & Neurology (Psychiatry) | 221 LONGWOOD AVE BRIGHAM PSYCHIATRIC SPECIALTIES, 4TH FLOOR BOSTON, MA 02115 (617) 732-6753 |
| 1346326535 | RITA MARIE MCCARTHY RN NP Individual | Nurse Practitioner (Adult Health) | 221 LONGWOOD AVE BOSTON, MA 02115 (617) 732-7672 |
| 1538230743 | DR. JANIS L ANDERSON PH.D. Individual | Psychologist (Clinical) | 221 LONGWOOD AVE BWH PSYCHIATRY MEZZ. BOSTON, MA 02115 (617) 732-7993 |
| 1053470344 | QUENTIN REGESTEIN MD Individual | Specialist | 221 LONGWOOD AVE BOSTON, MA 02115 (617) 739-1340 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1821973173, enumerated in the NPI registry as an "individual" on August 06, 2025
The provider is located at 221 Longwood Ave Boston, Ma 02115 and the phone number is (617) 525-9496
The provider's speciality is Dermatology with taxonomy code 207N00000X
This NPI record was last updated on August 06, 2025. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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