What is David Hartzell's NPI number?

David Hartzell's National Provider Identifier (NPI) is 1639113814, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is David Hartzell's specialty?

David Hartzell is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).

Where is David Hartzell located?

David Hartzell's practice location on file with NPPES is 4598 S Tracy Blvd, Tracy, CA 95377-8106.

What is David Hartzell's phone number?

The practice phone number listed in the NPPES registry for David Hartzell is (209) 835-1181.

Is David Hartzell's NPI active?

Yes — David Hartzell's NPI (1639113814) is active in the NPPES registry as of the last update on 2009-04-06.

IndividualActive

David Hartzell, O.D.

NPI 1639113814 · Optometrist · Tracy, CA

David Hartzell, O.D. is a Optometrist provider in Tracy, CA (NPI 1639113814).

Provider details

NPI number: 1639113814
Entity type: Individual
Primary specialty: OptometristEye and Vision Services Providers
Credential: O.D.
Sex: Male
Sole proprietor: No
License: OPT 7818 TPA (CA)

Practice location

4598 S Tracy Blvd

130

Tracy, CA 95377-8106

Phone: (209) 835-1181

Fax: (209) 835-9396

Approximate (ZIP-level) locationGet directions

More CA providers

Mailing address

1246 Aincille St

Tracy, CA 95304-5846

Specialties & taxonomies

OptometristPrimary152W00000XLicense OPT 7818 TPA (CA)
Eye and Vision Services Providers

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2006-06-16
Last updated: 2009-04-06

Frequently asked questions

What is David Hartzell's NPI number?: David Hartzell's National Provider Identifier (NPI) is 1639113814, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is David Hartzell's specialty?: David Hartzell is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
Where is David Hartzell located?: David Hartzell's practice location on file with NPPES is 4598 S Tracy Blvd, Tracy, CA 95377-8106.
What is David Hartzell's phone number?: The practice phone number listed in the NPPES registry for David Hartzell is (209) 835-1181.
Is David Hartzell's NPI active?: Yes — David Hartzell's NPI (1639113814) is active in the NPPES registry as of the last update on 2009-04-06.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions