NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1720230782 D.O.
Verify on CMS → Elizabeth Tigges, D.O.
Obstetrics & Gynecology Physician in Ottumwa, Iowa.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,326 in Obstetrics & Gynecology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
185
Medicare Part D claims · 72 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$263.23
6 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Elizabeth Tigges, D.O. filed 185 Medicare Part D claims in 2023 as an Obstetrics & Gynecology Physician in Ottumwa, Iowa, prescribing 92% generic.
- 185
- Part D claims, 2023
- 92%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥35th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Elizabeth Tigges, D.O.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1720230782), first enumerated 10/21/2008.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 185 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$263.23 in reported industry payments (6 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1720230782 · Obstetrics & Gynecology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1720230782
- ENUM-MID 2008
- TAX-MID 44K Obstetrics &
- RX-LIGHT 185
- BOOK-THIN 334 in Iowa
- PHOTO-ENUM Karen Leedom · 2008
Elizabeth Tigges, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
185 ≥ 35th percentile 35% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Elizabeth Tigges, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Elizabeth Tigges, D.O.?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
185 3% vs specialty avg
Specialty distribution in Iowa
How Obstetrics & Gynecology Physician compares to other specialties among Iowa providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Obstetrics & Gynecology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1720230782 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | D.O. |
| Gender | Female |
| NPI Issued | 10/21/2008 |
Hospital and facility affiliations
Facilities where Elizabeth Tigges, D.O. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Grinnell Regional Medical Center
★★☆☆☆ 2/5
Grinnell, IA
Acute Care Hospitals
CMS CCN: 160147
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Elizabeth Tigges, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$263
Largest payer
Astellas Pharma US Inc
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Generic-heavy
Elizabeth Tigges, D.O. - brand share 8.0%
Obstetrics & Gynecology Physician average
8% brand-name claims vs 92% generic, on 185 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
185
Total Claims
$15K
Total Drug Cost
72
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 334
- Total Day Supply
- 8,752
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $8K
- Generic Drug Cost
- $7K
- Opioid Claims
- 18 (9.7% rate)
- Antibiotic Claims
- 20
Patient Demographics
- Average Patient Age
- 69.4 years
- Avg HCC Risk Score
- 0.72
- Gender Split
- 100% female / 0% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Elizabeth Tigges, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Alendronate Sodium
Alendronate Sodium
50 claims
- Oxybutynin Chlorid… 19
Oxybutynin Chloride Er
19 claims
- Estradiol 18
Estradiol
18 claims
| Drug | Claims |
|---|---|
| Alendronate Sodium | 50 |
| Oxybutynin Chloride Er Oxybutynin Chloride | 19 |
| Estradiol | 18 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Obstetrics & Gynecology Physician Overview
How Elizabeth Tigges, D.O. fits within the Obstetrics & Gynecology Physician landscape nationally.
44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Elizabeth Tigges, D.O.'s 185 claims are above the specialty average of 179.
Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Tigges, both outside Iowa so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Obstetrics & Gynecology Physician Providers in Iowa
Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as Tigges.
One of 334 Obstetrics & Gynecology Physician providers enrolled in Iowa, 5 are shown here.
Dr. Johanna Abernathy
MD
Cedar Rapids, IA
Dr. Diane Adam
M.D.
Coralville, IA
Dr. Angela Aldrich
M.D.
Sioux City, IA
Dr. Anisa Alizaidy
MD
Iowa City, IA
Dr. Olanike Alonge-Obe
MD, MPH
Waterloo, IA
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Elizabeth Tigges, D.O.'s specialty? ▼
Elizabeth Tigges, D.O. specializes in Obstetrics & Gynecology Physician and practices in Ottumwa, Iowa. Credentials: D.O..
How much does Elizabeth Tigges, D.O. prescribe under Medicare Part D? ▼
In 2023, Elizabeth Tigges, D.O. wrote 185 Medicare Part D claims totaling $15K in drug costs for 72 beneficiaries.
Where is Elizabeth Tigges, D.O. located? ▼
Elizabeth Tigges, D.O. is located at 1005 PENNSYLVANIA AVE, Ottumwa, IA, 52501. Phone: (641) 682-8761.
What is Elizabeth Tigges, D.O.'s NPI number? ▼
Elizabeth Tigges, D.O.'s National Provider Identifier (NPI) is 1720230782, issued on 10/21/2008.
Does Elizabeth Tigges, D.O. prescribe more brand-name or generic drugs? ▼
Elizabeth Tigges, D.O.'s prescribing is 8% brand-name and 92% generic drugs by claim count, with $8K in brand drug costs.
Does Elizabeth Tigges, D.O. prescribe opioids? ▼
Yes, Elizabeth Tigges, D.O. had 18 opioid claims in 2023 with an opioid prescribing rate of 9.7%.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does Elizabeth Tigges, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Elizabeth Tigges, D.O.'s most frequently prescribed drugs include Alendronate Sodium, Oxybutynin Chloride Er, Estradiol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Elizabeth Tigges, D.O. accept Medicare? ▼
Elizabeth Tigges, D.O. appears in CMS Medicare data with 185 Part D claims and 72 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Elizabeth Tigges, D.O.'s credentials? ▼
Elizabeth Tigges, D.O.'s NPI is 1720230782 with credentials D.O.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.