2026 NPPES data Obstetrics & Gynecology Physician NPI 1891781035 MD
Verify on CMS →

TARA ANDERSON, MD

Obstetrics & Gynecology Physician in AURORA, Illinois. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
220
Medicare Part D claims · 55 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$125.92
7 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

TARA ANDERSON, MD filed 220 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in AURORA, Illinois, prescribing 74% generic.

220
Part D claims, 2023
74%
generic prescribing
$125.92
industry payments (Sunshine Act)

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.

TARA ANDERSON, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

220 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

TARA ANDERSON, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about TARA ANDERSON, MD?

Quality data not reported

NPI registry status

Active

Issued 09/22/2005

NPI 1891781035

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

220 23% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Illinois

How Obstetrics & Gynecology Physician compares to other specialties among Illinois providers

Illinois providers

Obstetrics & Gynecology Physician share within Illinois

1. Obstetrics & Gynecology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Obstetrics & Gynecology Physician share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Obstetrics & Gynecology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Obstetrics & Gynecology Physician ABMS/AOA estimate

Est. board-certified rate (Obstetrics & Gynecology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Obstetrics & Gynecology Physician) — ABMS / AOA estimate

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).

TARA ANDERSON, MD appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding MD credentials at 2040 OGDEN AVE, AURORA, IL, 60504, with a listed phone of (630) 978-6886. NPI 1891781035 was issued on 09/22/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ANDERSON most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 220 prescription claims written by this provider, covering 55 Medicare beneficiaries and totaling roughly $20K in drug spend, split 26% brand-name and 74% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

2040 OGDEN AVE
AURORA, IL 60504

Provider Details

NPI 1891781035
Specialty Obstetrics & Gynecology Physician
Credentials MD
Gender Female
NPI Issued 09/22/2005

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 TARA ANDERSON, MD. Source: openpaymentsdata.cms.gov.

Total received

$126

Largest payer

Agile Therapeutics, 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.

License & disciplinary context — Illinois IDFPR 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 — they are NOT specific to TARA ANDERSON, MD. To verify TARA ANDERSON, MD's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases

IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

TARA ANDERSON, MD — brand share 26.0%
Specialty average (est.)

26% brand-name claims vs 74% generic, on 220 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.

220
Total Claims
$20K
Total Drug Cost
55
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
447
Total Day Supply
12,664
Brand vs Generic
26% brand / 74% generic
Brand Drug Cost
$12K
Generic Drug Cost
$8K

Patient Demographics

Average Patient Age
67.5 years
Avg HCC Risk Score
0.92
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 TARA ANDERSON, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Estradiol
50
Medroxyprogesterone Acetate
18
Estradiol (Twice Weekly)
Estradiol
15
Fluconazole
13
Zolpidem Tartrate
13
Estradiol-Norethindrone Acetat
Estradiol/Norethindrone Acet
11
Prempro
"Estrogen
N/A

* 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 TARA ANDERSON, MD fits within the Obstetrics & Gynecology Physician landscape nationally.

44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

TARA ANDERSON, MD's 220 claims are above the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Illinois

Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as ANDERSON.

Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is TARA ANDERSON, MD's specialty?
TARA ANDERSON, MD specializes in Obstetrics & Gynecology Physician and practices in AURORA, Illinois. Credentials: MD.
How much does TARA ANDERSON, MD prescribe under Medicare Part D?
In 2023, TARA ANDERSON, MD wrote 220 Medicare Part D claims totaling $20K in drug costs for 55 beneficiaries.
Where is TARA ANDERSON, MD located?
TARA ANDERSON, MD is located at 2040 OGDEN AVE, AURORA, IL, 60504. Phone: (630) 978-6886.
What is TARA ANDERSON, MD's NPI number?
TARA ANDERSON, MD's National Provider Identifier (NPI) is 1891781035, issued on 09/22/2005.
Does TARA ANDERSON, MD prescribe more brand-name or generic drugs?
TARA ANDERSON, MD's prescribing is 26% brand-name and 74% generic drugs by claim count, with $12K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US?
There are 44,313 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 TARA ANDERSON, MD prescribe most often?
Based on 2023 Medicare Part D data, TARA ANDERSON, MD's most frequently prescribed drugs include Estradiol, Medroxyprogesterone Acetate, Estradiol (Twice Weekly). This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TARA ANDERSON, MD accept Medicare?
TARA ANDERSON, MD appears in CMS Medicare data with 220 Part D claims and 55 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TARA ANDERSON, MD's credentials?
TARA ANDERSON, MD's NPI is 1891781035 with credentials MD. 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

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