NPPES file of Aug 9, 2026

Abigail Christine Gillogly Harsch, O.D.

Corneal and Contact Management Optometrist · Tahlequah, OK

Abigail Christine Gillogly Harsch, O.D. is a corneal and contact management optometrist with a practice address in Tahlequah, Oklahoma, and NPI 1649655549, issued on Jul 21, 2015. Check the license (Oklahoma 2850, as entered in NPPES) with the Oklahoma 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
1649655549
Name
Abigail Christine Gillogly Harsch
Credential
O.D.
Primary taxonomy
Corneal and Contact Management Optometrist 152WC0802X
License number
2850 OK
Self-reported in NPPES; status is on the state search
Practice location
1001 N Grand Ave, Tahlequah, OK 74464
Phone
(918) 444-4031
Enumerated
Jul 21, 2015
Record last updated
Jul 21, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20170320001048); accepts Medicare assignment
Medical or professional school
University Of Houston - College Of Optometry, 2015
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1001 N Grand Ave

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

  1. Raul Auza, O.D.Optometrist1134319551
  2. Madison Bailey, ODOptometrist1467217026
  3. Rodney Bendure, ODOptometrist1033138037
  4. Michele Bither-Marshall, ODOptometrist1023038452
  5. Louis Blowers, ODOptometrist1487144424
  6. Drew BreedloveStudent in an Organized Health Care Education/Training Program1629823323

Verify Abigail Christine Gillogly Harsch in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Oklahoma board licenses this profession
    Search for license 2850
    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 Oklahoma license search

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39% fewer Medicare Part D claims than the average corneal and contact management optometrist in 2024

137 Medicare Part D claims for 73 beneficiaries, against an average of 225 among the 585 providers of this specialty who prescribed in Part D. Brand-name drugs were 66% of claims.

  1. Abigail Gillogly Harsch137
  2. Specialty average225

Most prescribed

  1. Prednisolone Acetate24 claims
  2. Tobramycin-Dexamethasone12 claims
  3. Restasis11 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: $11,194.73

34 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 610 providers of this specialty with any payment received $1,035.17 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Abigail Gillogly Harsch$11,195
  2. Specialty average$1,035

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

  1. Nittany Eye Associates LtdState College, PA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Abigail Christine Gillogly Harsch among 10 corneal and contact management optometrist records in Oklahoma

Abigail Christine Gillogly Harsch, O.D. is one of 10 corneal and contact management optometrist records with a practice address in Oklahoma. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 70% of them.

  • NPI issued2015 · 70% of these records are older, 10% newer
  • In a Medicare fileYes · 70% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Record last updated2015 · 80% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152WC0802X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Corneal and Contact Management Optometrist providers in Oklahoma

There are 10 corneal and contact management optometrist records in Oklahoma.

The 8 corneal and contact management optometrist records with the nearest ZIP codes

  1. Alia Cappellani, ODTahlequah, OK 744641679205801
  2. Leonard Wilkins, O.D.Tahlequah, OK 744641689777468
  3. Jeffrey Mitchell, O.D.Wagoner, OK 744671750495206
  4. Phillip Gelwick, O.D.Tulsa, OK 741121679620199
  5. James Cunningham, ODAda, OK 748201871502674
  6. Andrew Kraft, ODEnid, OK 737011811961170
  7. Thien Nguyen, O.D.Oklahoma City, OK 731321144605452
  8. Amy Luu, ODOklahoma City, OK 731191508144346

Common questions

What is Abigail Christine Gillogly Harsch, O.D.'s NPI number?

Abigail Christine Gillogly Harsch, O.D.'s National Provider Identifier (NPI) is 1649655549, issued on Jul 21, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Abigail Christine Gillogly Harsch, O.D. located?

The NPPES record lists a practice address at 1001 N Grand Ave, Tahlequah, OK, 74464. Phone: (918) 444-4031. Providers update this record themselves, so call before visiting.

How can I verify Abigail Christine Gillogly Harsch, O.D.'s license?

NPPES lists Oklahoma license number 2850, as entered by the provider. Search the Oklahoma board that licenses this profession; the NPPES record confirms identity only.

How much does Abigail Christine Gillogly Harsch, O.D. prescribe under Medicare Part D?

In 2024, Abigail Christine Gillogly Harsch, O.D. had 137 Medicare Part D claims for 73 beneficiaries; the average among corneal and contact management optometrist prescribers was 225. 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.