ELLEN CONROY
NPI 1821557935
Allergy & Immunology in Boston, MA
NPI Status: Active since March 18, 2019
- Individual
- Female
- Allergy & Immunology
- PECOS Enrolled
About ELLEN CONROY
This page provides the complete NPI Profile along with additional information for Ellen Conroy, a provider established in Boston, Massachusetts with a medical specialization in Allergy & Immunology. The healthcare provider is registered in the NPI registry with number 1821557935 assigned on March 2019. The practitioner's primary taxonomy code is 207K00000X with license number 292019 (MA). The provider is registered as an individual and her NPI record was last updated July 2025.
- NPI
- 1821557935
- Provider Name
- ELLEN CONROY
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 300 LONGWOOD AVE BOSTON, MA 02115
- Location Phone
- (617) 355-6000
- Mailing Address
- 300 LONGWOOD AVE BOSTON, MA 02115
- Mailing Phone
- (617) 355-6000
- Is Sole Proprietor?
- No
- Enumeration Date
- 03-18-2019
- Last Update Date
- 07-16-2025
- Code Navigator
Location Map
Secondary Locations
- 300 Community Dr
Manhasset, NY 11030
(516) 562-0100
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
Allergy & Immunology
- Taxonomy Code
- 207K00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 292019
- License State
- MA
- Taxonomy Description
- An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
Medicare Participation & PECOS Enrollment Status
Ellen Conroy 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
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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 | 5 | 5 | 7 | 9 | 3 | 5 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 8 | 4 | 1 | 10 | 5 | 14 | 9 | 6 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 8 + 4 + 1 + 1 + 0 + 5 + 1 + 4 + 9 + 6 + 24 = 65 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 65 = 5 | 5 | ||||||||
The NPI number 1821557935 is valid because the calculated check digit 5 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 |
|---|---|---|---|
| 1710975644 | MRS. KIRA A DIES SCM Individual | Genetic Counselor, MS | 300 LONGWOOD AVE CLS 14074 BOSTON, MA 02115 (617) 919-3009 |
| 1518955442 | MS. JESSIE REBECCA HASTINGS M.S. Individual | Genetic Counselor, MS | 300 LONGWOOD AVE DEPARTMENT OF CARDIOLOGY BOSTON, MA 02115 (617) 355-7245 |
| 1639169360 | DR. PETER H WEINSTOCK MD PHD Individual | Pediatrics (Pediatric Critical Care Medicine) | 300 LONGWOOD AVE DIVISION OF CRITICAL CARE MEDICINE BOSTON, MA 02115 (617) 355-7327 |
| 1427048107 | DR. HENRY LAWRENCE DORKIN MD Individual | Pediatrics (Pediatric Pulmonology) | 300 LONGWOOD AVE HUNNEWELL 2 BOSTON, MA 02115 (617) 355-1900 |
| 1740270107 | DR. JOAN MARILYN STOLER MD Individual | Medical Genetics (Clinical Genetics (M.D.)) | 300 LONGWOOD AVE CHILDREN'S HOSPITAL BOSTON, MA 02115 (617) 355-4697 |
| 1558351866 | DR. BONNIE L PADWA DMD, MD Individual | Oral & Maxillofacial Surgery | 300 LONGWOOD AVE HU-158 BOSTON, MA 02115 (617) 355-6259 |
| 1972593150 | DR. HARVEY LOUIS LEVY MD Individual | Medical Genetics (Clinical Biochemical Genetics) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-7346 |
| 1962493817 | WAYNE TWORETZKY MD Individual | Pediatrics (Pediatric Cardiology) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-6793 |
| 1952392888 | DAVID BROWN MD Individual | Pediatrics (Pediatric Cardiology) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-7893 |
| 1710978671 | DAVID FULTON MD Individual | Pediatrics (Pediatric Cardiology) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-2793 |
| 1033100912 | ROBERT GEGGEL MD Individual | Pediatrics (Pediatric Cardiology) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-2793 |
| 1851382436 | DR. BENJAMIN DAN MATTHEWS MD Individual | Pediatrics (Pediatric Critical Care Medicine) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-6000 |
| 1063403780 | PETER LANG MD Individual | Pediatrics | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-2793 |
| 1629069273 | DR. ROSALIND BROWN M.D. Individual | Pediatrics (Pediatric Endocrinology) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 919-2866 |
| 1437140894 | JAMI LEVINE MD Individual | Pediatrics (Pediatric Cardiology) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-2793 |
| 1598756801 | RENEE MARGOSSIAN MD Individual | Pediatrics (Pediatric Cardiology) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-9793 |
| 1730170044 | AUDREY MARSHALL MD Individual | Pediatrics (Pediatric Cardiology) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-9793 |
| 1831180157 | MARY MULLEN MD Individual | Pediatrics (Pediatric Cardiology) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-6793 |
| 1245221464 | MS. KIMBERLI A OMALLEY PNP Individual | Nurse Practitioner (Pediatrics) | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-6058 |
| 1295716314 | RACHEL WALD MD Individual | Specialist | 300 LONGWOOD AVE BOSTON, MA 02115 (617) 355-6793 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1821557935, enumerated in the NPI registry as an "individual" on March 18, 2019
The provider is located at 300 Longwood Ave Boston, Ma 02115 and the phone number is (617) 355-6000
The provider's speciality is Allergy & Immunology with taxonomy code 207K00000X
Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary 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.
This NPI record was last updated on March 18, 2019. 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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