Richard Robert Stack, M.D.
Richard Robert Stack is a Pulmonary Disease Physician provider (Internal Medicine) practicing in Carmichael, CA, registered in the NPPES registry with NPI 1598707747 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1598707747 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Richard Robert Stack |
| Credential | M.D. |
| Sex | Male |
| Practice address | 6403 COYLE AVE, SUITE 450, Carmichael, CA, 95608 |
| Phone | 9164827621 |
| Fax | 9169727734 |
| Enumeration date | 2006-06-12 |
| Last updated in NPPES | 2013-01-17 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207RI0200X | Infectious Disease Physician | Secondary | G54291 | CA |
| 207RP1001X | Pulmonary Disease Physician | Primary | G54291 | CA |
| 207RS0012X | Sleep Medicine (Internal Medicine) Physician | Secondary | G54291 | CA |
| 207RC0200X | Critical Care Medicine (Internal Medicine) Physician | Secondary | G54291 | 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 |
|---|---|---|---|
| 00G542910 | Medicaid | CA | — |
Copy-ready billing details
Provider: Richard Stack, M.D. NPI: 1598707747 Taxonomy: 207RP1001X (Pulmonary Disease Physician) Address: 6403 COYLE AVE, SUITE 450, Carmichael, CA, 95608
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1972505998 | James Cotton | Individual | Physician Assistant | Carmichael, CA |
| 1497757413 | Dawn Topping | Individual | Physician Assistant | Carmichael, CA |
| 1497757587 | Roy Pottenger | Individual | Orthopaedic Surgery Physician | Carmichael, CA |
| 1922000942 | Hunter Greene | Individual | Sports Medicine (Orthopaedic Surgery) Physician | Carmichael, CA |
| 1437191657 | Peter Murphy | Individual | Pulmonary Disease Physician | Carmichael, CA |
| 1538220587 | Hanger Prosthetics & Orthotics West Inc. | Organization | Prosthetic/Orthotic Supplier | Carmichael, CA |
| 1194853085 | Craig N. Pfeiffer, M.D., Inc. | Organization | Neurological Surgery Physician | Carmichael, CA |
| 1184173916 | Leslie Goodwin | Individual | Physical Therapy Assistant | Carmichael, CA |
Verify this record
Cross-check NPI 1598707747 against the authoritative CMS record: view Richard Robert Stack 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 2013-01-17.