Irving R Tessler, MD
Irving R Tessler is a Pediatric Cardiology Physician provider (Pediatrics) practicing in Pasadena, CA, registered in the NPPES registry with NPI 1821070681 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1821070681 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Irving R Tessler |
| Credential | MD |
| Sex | Male |
| Practice address | 50 BELLEFONTAINE ST, STE 405, Pasadena, CA, 91105 |
| Phone | 6267969259 |
| Fax | 6264498560 |
| Enumeration date | 2005-11-17 |
| Last updated in NPPES | 2013-02-21 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 2080P0202X | Pediatric Cardiology Physician | Primary | G14307 | CA |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00G143070 | Medicaid | CA | — |
Copy-ready billing details
Provider: Irving Tessler, MD NPI: 1821070681 Taxonomy: 2080P0202X (Pediatric Cardiology Physician) Address: 50 BELLEFONTAINE ST, STE 405, Pasadena, CA, 91105
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1225010077 | Robert Loitz | Individual | Pediatric Cardiology Physician | Pasadena, CA |
| 1841272697 | Joseph Ahdoot | Individual | Pediatric Cardiology Physician | Pasadena, CA |
| 1922080779 | Lennis Burke | Individual | Pediatric Cardiology Physician | Pasadena, CA |
| 1265414833 | Elizabeth Deoliveira | Individual | Pediatric Cardiology Physician | Pasadena, CA |
| 1871578013 | Robbin Okamoto | Individual | Dentist | Pasadena, CA |
| 1255317954 | Gerilynn Okamoto | Individual | Dentist | Pasadena, CA |
| 1710927025 | James Wallstrom | Individual | Internal Medicine Physician | Pasadena, CA |
| 1043249105 | Fairmont Pharmacy LLC | Organization | Community/Retail Pharmacy | Pasadena, CA |
Verify this record
Cross-check NPI 1821070681 against the authoritative CMS record: view Irving R Tessler 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
Where does Irving Tessler practice?
What is the NPI number for Irving Tessler?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2013-02-21.