Dr. Mark Duane Welch, D.C.
Dr. Mark Duane Welch is a Chiropractor provider (Chiropractor) practicing in Modesto, CA, registered in the NPPES registry with NPI 1942292818 since 2005. The credential DC stands for Doctor of Chiropractic.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1942292818 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Mark Duane Welch |
| Credential | D.C. |
| Sex | Male |
| Practice address | 1101 STANDIFORD AVE, STE A6, Modesto, CA, 95350 |
| Phone | 2095220822 |
| Fax | 2095224563 |
| Enumeration date | 2005-08-17 |
| Last updated in NPPES | 2023-02-28 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 111N00000X | Chiropractor | Primary | DC22206 | CA |
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| ZZZ61519Z | Other | CA | BLUE SHIELD |
Copy-ready billing details
Provider: Mark Welch, D.C. NPI: 1942292818 Taxonomy: 111N00000X (Chiropractor) Address: 1101 STANDIFORD AVE, STE A6, Modesto, CA, 95350
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1760474415 | Marla Welch | Individual | Chiropractor | Modesto, CA |
| 1922082726 | Leroy Egenberger | Individual | Mental Health Counselor | Modesto, CA |
| 1487674636 | Marianne Peck | Individual | Mental Health Counselor | Modesto, CA |
| 1033132170 | Blake Alexander | Individual | Dermatology Physician | Modesto, CA |
| 1134214463 | Daniel Smith | Individual | Marriage & Family Therapist | Modesto, CA |
| 1124194469 | Rahim Mesbah | Individual | Dentist | Modesto, CA |
| 1659419463 | Welch Chiropractic Office | Organization | Chiropractor | Modesto, CA |
| 1902935893 | Fred P. Guarcello, Od | Organization | Optometrist | Modesto, CA |
Verify this record
Cross-check NPI 1942292818 against the authoritative CMS record: view Dr. Mark Duane Welch 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 2023-02-28.