Dr. Jonathan L Held, M.D.
Dr. Jonathan L Held is a Specialist provider (Specialist) practicing in Ayer, MA, registered in the NPPES registry with NPI 1699767608 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1699767608 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Jonathan L Held |
| Credential | M.D. |
| Sex | Male |
| Practice address | 190 GROTON RD, SUITE 180, Ayer, MA, 01432 |
| Phone | 9787727221 |
| Fax | 9787725849 |
| Enumeration date | 2005-08-16 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 174400000X | Specialist | Primary | 60554 | MA |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: Jonathan Held, M.D. NPI: 1699767608 Taxonomy: 174400000X (Specialist) Address: 190 GROTON RD, SUITE 180, Ayer, MA, 01432
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1285630988 | Jeffrey Arpin | Individual | Surgery Physician | Ayer, MA |
| 1538152574 | Paul Harasimowicz | Individual | Specialist | Ayer, MA |
| 1669447579 | Asha Naidu | Individual | Infectious Disease Physician | Ayer, MA |
| 1346208196 | Primary Care Specialists Inc. | Organization | Primary Care Clinic/Center | Ayer, MA |
| 1386693885 | Deanna Kardoos | Individual | Physician Assistant | Ayer, MA |
| 1447201140 | Lotus Med LLC | Organization | Health Maintenance Organization | Ayer, MA |
| 1720031248 | Nashoba Valley Urology, Inc | Organization | Specialist | Ayer, MA |
| 1639119167 | Gisela Velez | Individual | Ophthalmology Physician | Ayer, MA |
Verify this record
Cross-check NPI 1699767608 against the authoritative CMS record: view Dr. Jonathan L Held on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.