2026 NPPES data Obstetrics & Gynecology Physician NPI 1083803993 M.D.
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ELIZABETH SHADIGIAN, M.D.

Obstetrics & Gynecology Physician in ANN ARBOR, Michigan. 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
395
Medicare Part D claims · 45 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ELIZABETH SHADIGIAN, M.D. filed 395 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in ANN ARBOR, Michigan, prescribing 89% generic.

395
Part D claims, 2023
89%
generic prescribing

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.

ELIZABETH SHADIGIAN, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

395 Top 43% higher than 57% 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)

ELIZABETH SHADIGIAN, M.D. 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 ELIZABETH SHADIGIAN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 10/16/2007

NPI 1083803993

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

395 121% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Michigan

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

Michigan providers

Obstetrics & Gynecology Physician share within Michigan

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

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).

ELIZABETH SHADIGIAN, M.D. appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding M.D. credentials at 2340 E STADIUM BLVD, ANN ARBOR, MI, 48104, with a listed phone of (734) 477-5100. NPI 1083803993 was issued on 10/16/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SHADIGIAN 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 395 prescription claims written by this provider, covering 45 Medicare beneficiaries and totaling roughly $49K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 9.1%. 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

2340 E STADIUM BLVD
ANN ARBOR, MI 48104

Provider Details

NPI 1083803993
Specialty Obstetrics & Gynecology Physician
Credentials M.D.
Gender Female
NPI Issued 10/16/2007

License & disciplinary context — Michigan MI-BOM 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 ~41K Michigan medical licensees in 2023 — they are NOT specific to ELIZABETH SHADIGIAN, M.D.. To verify ELIZABETH SHADIGIAN, M.D.'s current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM 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 Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

ELIZABETH SHADIGIAN, M.D. — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 395 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.

395
Total Claims
$49K
Total Drug Cost
45
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
677
Total Day Supply
18,707
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$33K
Generic Drug Cost
$14K
Opioid Claims
36 (9.1% rate)
Antibiotic Claims
18

Patient Demographics

Average Patient Age
68.6 years
Avg HCC Risk Score
0.87

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What ELIZABETH SHADIGIAN, M.D. 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
Levothyroxine Sodium
23
Clonazepam
19
Gabapentin
16
Fluconazole
14
Metformin Hcl Er
Metformin Hcl
14
Estradiol
13
Oxycodone Hcl
13
Oxycontin
Oxycodone Hcl
13
Alprazolam
12
Dextroamphetamine-Amphetamine
Dextroamphetamine/Amphetamine
11

* 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 SHADIGIAN, M.D. 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

ELIZABETH SHADIGIAN, M.D.'s 395 claims are above the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Michigan

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

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

Frequently Asked Questions

What is ELIZABETH SHADIGIAN, M.D.'s specialty?
ELIZABETH SHADIGIAN, M.D. specializes in Obstetrics & Gynecology Physician and practices in ANN ARBOR, Michigan. Credentials: M.D..
How much does ELIZABETH SHADIGIAN, M.D. prescribe under Medicare Part D?
In 2023, ELIZABETH SHADIGIAN, M.D. wrote 395 Medicare Part D claims totaling $49K in drug costs for 45 beneficiaries.
Where is ELIZABETH SHADIGIAN, M.D. located?
ELIZABETH SHADIGIAN, M.D. is located at 2340 E STADIUM BLVD, ANN ARBOR, MI, 48104. Phone: (734) 477-5100.
What is ELIZABETH SHADIGIAN, M.D.'s NPI number?
ELIZABETH SHADIGIAN, M.D.'s National Provider Identifier (NPI) is 1083803993, issued on 10/16/2007.
Does ELIZABETH SHADIGIAN, M.D. prescribe more brand-name or generic drugs?
ELIZABETH SHADIGIAN, M.D.'s prescribing is 11% brand-name and 89% generic drugs by claim count, with $33K in brand drug costs.
Does ELIZABETH SHADIGIAN, M.D. prescribe opioids?
Yes, ELIZABETH SHADIGIAN, M.D. had 36 opioid claims in 2023 with an opioid prescribing rate of 9.1%.
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 ELIZABETH SHADIGIAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ELIZABETH SHADIGIAN, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Clonazepam, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ELIZABETH SHADIGIAN, M.D. accept Medicare?
ELIZABETH SHADIGIAN, M.D. appears in CMS Medicare data with 395 Part D claims and 45 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ELIZABETH SHADIGIAN, M.D.'s credentials?
ELIZABETH SHADIGIAN, M.D.'s NPI is 1083803993 with credentials M.D.. 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