Mark Welch, M.D

NPI: 1619943644

Mark Welch, M.D

Q: What is Mark Welch's NPI number?

Mark Welch's NPI number is 1619943644, a unique 10-digit identifier issued by CMS.

Q: What does Mark Welch specialize in?

Mark Welch specializes in Dermatology, taxonomy code 207ND0101X.

Q: Where does Mark Welch practice?

Mark Welch practices in Bethesda, MD 20817-1809.

Q: When was Mark Welch's NPI issued?

Mark Welch's NPI was issued on February 28, 2006.

Q: What is Mark Welch's provider type?

Mark Welch is an Individual Provider under CMS NPI Type 1.

ActiveIndividual ProviderDermatology

NPI issued: February 28, 2006

Quick Facts

NPI Number

1619943644

TypeIndividual

StatusActive

SpecialtyDermatology

Taxonomy207ND0101X — Dermatology

Phone

(301) 564-3131

StateMD

NPI Validation Status: Verified

✅Valid 10-digit NPI number (1619943644)

✅Active status confirmed

✅Verified by CMS NPPES Registry

✅HIPAA compliant identifier

✅Enumeration date on file (February 28, 2006)

Data source: CMS NPPES

Provider Overview

MARK WELCH, M.D is a Dermatology provider based in Bethesda, MD who has been registered with CMS since 2006. This NPI is currently Active under CMS NPPES registry.

Provider Details

NPI Number1619943644

Provider TypeIndividual Provider

GenderMale

CredentialM.D

StatusActive

Enumeration DateFebruary 28, 2006

Practice Location

CityBethesda

StateMD

ZIP Code20817-1809

Phone(301) 564-3131

Specialties & Licenses

★ Primary

SpecialtyDermatology

Taxonomy Code207ND0101X

License StateMD

Mailing Address

CityBethesda

StateMD

ZIP Code20817-1809

Phone(301) 564-3131

Same as practice location

How to Use This NPI

📋

For Insurance Billing

Use NPI 1619943644 in Box 33 of the CMS-1500 claim form. This number is required by all major insurance carriers to identify the billing provider and process electronic medical claims.

🏥

For Credentialing

Reference NPI 1619943644for provider credential verification. Hospital systems, state licensing boards, and CAQH directories query this number to verify the provider's active clinical status.

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For Patients

Share NPI 1619943644 with your insurance company. If you need to verify out-of-network benefits or file a reimbursement claim, your insurance provider will require this number to process it.