NPPES file of Aug 9, 2026

Donald W. Blocker, O.D.

Optometrist · Portland, TN

Donald W. Blocker, O.D. is an optometrist with a practice address in Portland, Tennessee, and NPI 1396798013, issued on May 17, 2006. Check the license (Tennessee OD0454, as entered in NPPES) with the Tennessee board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1396798013
Name
Donald W. Blocker
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
OD0454 TN
Self-reported in NPPES; status is on the state search
Practice location
605 S Broadway, Portland, TN 37148
Phone
(615) 325-2020
Enumerated
May 17, 2006
Record last updated
Feb 19, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(615) 325-5862
Medicaid ID
3595433 TN
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Donald W. Blocker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Tennessee board licenses this profession
    Search for license OD0454    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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3 optometrist records list a practice address in Portland

They are 3 of the 99 NPPES records with a practice address in Portland, and 1,300 optometrist records in Tennessee. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 3 in Portland → All 1,300 in Tennessee → Every provider in Portland →

Other optometrist records in Tennessee

  1. Catherine Abbott, O.D.Knoxville, TN1881034114
  2. Eddie Abernathy, ODRogersville, TN1831178508
  3. Khaled Abumayaleh, ODAlcoa, TN1811039266
  4. Thomas Adams, ODChattanooga, TN1699392464
  5. Brent Adamson, O.D.Paris, TN1629419957
  6. Sharon Adhami, O.D.Spring Hill, TN1225035983
  7. Emily Adkisson, ODMemphis, TN1619731247
  8. Mardia Ahmed, O.D.Knoxville, TN1528335999
  9. Sabina Ahmed, O.D.Knoxville, TN1427101716
  10. Ghaith Al-SowaidiChattanooga, TN1427586783

Common questions

What is Donald W. Blocker, O.D.'s NPI number?

Donald W. Blocker, O.D.'s National Provider Identifier (NPI) is 1396798013, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Donald W. Blocker, O.D. located?

The NPPES record lists a practice address at 605 S Broadway, Portland, TN, 37148. Phone: (615) 325-2020. Providers update this record themselves, so call before visiting.

How can I verify Donald W. Blocker, O.D.'s license?

NPPES lists Tennessee license number OD0454, as entered by the provider. Search the Tennessee board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.