NPPES file of Aug 9, 2026

Tiffany D. O'Brien, DDS

General Practice Dentistry · Marshfield, WI

Tiffany D. O'Brien, DDS is a general practice dentistry with a practice address in Marshfield, Wisconsin, and NPI 1477878304, issued on Apr 4, 2010. Check the license (Wisconsin 6656, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1477878304
Name
Tiffany D. O'Brien
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
6656 WI
Self-reported in NPPES; status is on the state search
Practice location
1307 N Saint Joseph Ave, Marshfield, WI 54449
Phone
(715) 221-5600
Enumerated
Apr 4, 2010
Record last updated
Jun 17, 2013 (not updated in 13 years: call before relying on the address or phone)
Medicaid ID
APPR WI
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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Also registered at 1307 N Saint Joseph Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Aditi Bharatkumar, D.D.S.Dentist1164830014
  2. Melissa Goldberg, RNCase Management Registered Nurse1043874456
  3. Nicole KaiserPhysician Assistant1568028876
  4. Meredith Kean, PHARMDPharmacist1962123703
  5. Rebecca Kizewski, RPHPharmacist1528789369
  6. Deepak Neelagiri, DDSGeneral Practice Dentistry1093026791

Verify Tiffany D. O'Brien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 6656
    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
Find the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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17% fewer Medicare Part D claims than the average general practice dentistry in 2024

69 Medicare Part D claims for 24 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. 19 claims were for opioids.

  1. Tiffany O'Brien69
  2. Specialty average83

Most prescribed

  1. Amoxicillin21 claims
  2. Hydrocodone-Acetaminophen13 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.

Industry payments in 2024: $150.00

2 payments; by number, the most common kind was consulting fee; the largest payer was Align Technology, Inc. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Tiffany O'Brien$150.00
  2. Specialty average$597.01

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Tiffany D. O'Brien among 2,305 general practice dentistry records in Wisconsin

Tiffany D. O'Brien, DDS is one of 2,305 general practice dentistry records with a practice address in Wisconsin. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 65% of them.

  • NPI issued2010 · 65% of these records are older, 34% newer
  • In a Medicare fileYes · 57% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2013 · 75% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

General Practice Dentistry providers in Wisconsin

There are 2,305 general practice dentistry records in Wisconsin.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Reena Abraham, DMDMarshfield, WI 544491457589491
  2. Barry Cole, D.D.S.Marshfield, WI 544491316151210
  3. Brandyn Deitz, DDSMarshfield, WI 544491346176658
  4. Wesley DittmanMarshfield, WI 544491942906631
  5. David Mabeus, DDSMarshfield, WI 544491952432452
  6. Gary Martin, DDSMarshfield, WI 544491609970730
  7. Deepak Neelagiri, DDSMarshfield, WI 544491093026791
  8. John O'Brien, DDSMarshfield, WI 544491811208333

Common questions

What is Tiffany D. O'Brien, DDS's NPI number?

Tiffany D. O'Brien, DDS's National Provider Identifier (NPI) is 1477878304, issued on Apr 4, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Tiffany D. O'Brien, DDS located?

The NPPES record lists a practice address at 1307 N Saint Joseph Ave, Marshfield, WI, 54449. Phone: (715) 221-5600. Providers update this record themselves, so call before visiting.

How can I verify Tiffany D. O'Brien, DDS's license?

NPPES lists Wisconsin license number 6656, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Tiffany D. O'Brien, DDS prescribe under Medicare Part D?

In 2024, Tiffany D. O'Brien, DDS had 69 Medicare Part D claims for 24 beneficiaries; the average among general practice dentistry prescribers was 83. Part D covers Medicare prescriptions 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. 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.