Tracey Marshall-Underwood, O.D.
Optometrist · Dover, DE
Tracey Marshall-Underwood, O.D. is an optometrist with a practice address in Dover, Delaware, and NPI 1154353944, issued on Jul 6, 2006. Check the license (Delaware I3-0001312, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tracey Marshall-Underwood
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- I3-0001312 DE
Self-reported in NPPES; status is on the state search - Practice location
- 103 Wolf Creek Blvd, Dover, DE 19901
- Phone
- (302) 678-3932
- Enumerated
- Jul 6, 2006
- Record last updated
- Dec 26, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161021000376); accepts Medicare assignment
- Medical or professional school
- Illinois College Of Optometry At Chicago, 2005
- Entity
- Type 1 · individual
8 nearest optometrist records → All 164 in Delaware → Look up another NPI →
Also registered at 103 Wolf Creek Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tracey Marshall-Underwood in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Delaware board licenses this profession
Search for license I3-0001312Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% more Medicare Part D claims than the average optometrist in 2024
312 Medicare Part D claims for 107 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.
Most prescribed
- Latanoprost89 claims
- Lumigan46 claims
- Prednisolone Acetate31 claims
- Dorzolamide Hcl24 claims
- Acetazolamide13 claims
- Brimonidine Tartrate13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 90.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $85.47
5 payments; by number, the most common kind was food and beverage; the largest payer was Oyster Point Pharma, Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Delaware Eye Care Center PAMilford, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tracey Marshall-Underwood among 164 optometrist records in Delaware
Tracey Marshall-Underwood, O.D. is one of 164 optometrist records with a practice address in Delaware. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2005 · median 2007 among the 116 with a school on file
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 optometrist records list a practice address in Dover
They are 29 of the 2,137 NPPES records with a practice address in Dover, and 164 optometrist records in Delaware.
All 164 in Delaware → Every provider in Dover → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Heidi Tedrick, ODDover, DE 199011104496538
- Phillip Petterborg, ODDover Afb, DE 199021376536813
- Patrick Shorter, O.D.Dover Afb, DE 199021962438705
- Thomas Hufnal, O.D.Wilmington, DE 198991821481367
- Andrew Berman, O.D.Dover, DE 199041487681284
- Laura Castillo, O. D.Dover, DE 199041689648768
- Colleen Everett, O. D.Dover, DE 199041740255512
- Philip Gross, ODDover, DE 199041295771939
Common questions
What is Tracey Marshall-Underwood, O.D.'s NPI number?
Tracey Marshall-Underwood, O.D.'s National Provider Identifier (NPI) is 1154353944, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tracey Marshall-Underwood, O.D. located?
The NPPES record lists a practice address at 103 Wolf Creek Blvd, Dover, DE, 19901. Phone: (302) 678-3932. Providers update this record themselves, so call before visiting.
How can I verify Tracey Marshall-Underwood, O.D.'s license?
NPPES lists Delaware license number I3-0001312, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity only.
How much does Tracey Marshall-Underwood, O.D. prescribe under Medicare Part D?
In 2024, Tracey Marshall-Underwood, O.D. had 312 Medicare Part D claims for 107 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is Tracey Marshall-Underwood, O.D.'s MIPS final score?
The 2023 MIPS final score is 90.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
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.