2026 NPPES data Hepatology Physician NPI 1811316458 M.D.
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SHIMA GHAVIMI, M.D.

Hepatology Physician in WATERLOO, Iowa. 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
234
Medicare Part D claims · 136 beneficiaries · Hepatology Physician avg: 803
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$367.01
4 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

SHIMA GHAVIMI, M.D. filed 234 Medicare Part D claims in 2023 as a Hepatology Physician in WATERLOO, Iowa, prescribing 75% generic.

234
Part D claims, 2023
75%
generic prescribing
Likely
board-certified (heuristic)

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.

SHIMA GHAVIMI, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

234 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 certification likely (heuristic — not verified)

SHIMA GHAVIMI, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — 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 SHIMA GHAVIMI, M.D.?

Quality data not reported

NPI registry status

Active

Issued 04/10/2014

NPI 1811316458

Primary specialty

Hepatology Physician

Rare

281 US NPIs in this specialty

Medicare Part D claims

234 71% vs specialty avg

2023 prescription claims

Specialty avg: 803

Specialty distribution in Iowa

How Hepatology Physician compares to other specialties among Iowa providers

Iowa providers

Hepatology Physician share within Iowa

1. Hepatology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hepatology Physician share within Iowa

Specialty board-certification context

Estimated specialty board-certified rate — Hepatology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Hepatology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Hepatology 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).

SHIMA GHAVIMI, M.D. appears in the CMS NPPES registry as a Hepatology Physician provider holding M.D. credentials at 1015 S HACKETT RD, WATERLOO, IA, 50701, with a listed phone of (319) 234-5990. NPI 1811316458 was issued on 04/10/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GHAVIMI 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 234 prescription claims written by this provider, covering 136 Medicare beneficiaries and totaling roughly $69K in drug spend, split 25% brand-name and 75% 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.

Hepatology Physician is a narrow specialty nationwide, with 281 enrolled providers across 36 states and an average of 803 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

1015 S HACKETT RD
WATERLOO, IA 50701

Provider Details

NPI 1811316458
Specialty Hepatology Physician
Credentials M.D.
Gender Female
NPI Issued 04/10/2014

Hospital and facility affiliations

Facilities where SHIMA GHAVIMI, M.D. 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.

ALLEN MEMORIAL HOSPITAL CORPORATION
WATERLOO, IA
CEDAR VALLEY MEDICAL SPECIALISTS PC
WATERLOO, IA

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 SHIMA GHAVIMI, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$367

Largest payer

Ardelyx, 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 · Above average

SHIMA GHAVIMI, M.D. — brand share 25.0%
Specialty average (est.)

25% brand-name claims vs 75% generic, on 234 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.

234
Total Claims
$69K
Total Drug Cost
136
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
288
Total Day Supply
5,440
Brand vs Generic
25% brand / 75% generic
Brand Drug Cost
$60K
Generic Drug Cost
$9K

Patient Demographics

Average Patient Age
66.4 years
Avg HCC Risk Score
1.26
Gender Split
63% female / 38% male
Age Distribution
<65: 42, 65-74: 66, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Pantoprazole Sodium
50
Dexlansoprazole Dr
Dexlansoprazole
11
Gavilyte-G
"Peg3350/Sod Sulf
N/A
Sod Sulf-Potass Sulf-Mag Sulf
"Sodium
N/A

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Hepatology Physician Overview

How SHIMA GHAVIMI, M.D. fits within the Hepatology Physician landscape nationally.

281
Hepatology Physician Providers in US
36
States with Hepatology Physician
803
Avg Claims per Provider

SHIMA GHAVIMI, M.D.'s 234 claims are below the specialty average of 803.

Nearby Hepatology Physician Providers in Iowa

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

Compare Hepatology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SHIMA GHAVIMI, M.D.'s specialty?
SHIMA GHAVIMI, M.D. specializes in Hepatology Physician and practices in WATERLOO, Iowa. Credentials: M.D..
How much does SHIMA GHAVIMI, M.D. prescribe under Medicare Part D?
In 2023, SHIMA GHAVIMI, M.D. wrote 234 Medicare Part D claims totaling $69K in drug costs for 136 beneficiaries.
Where is SHIMA GHAVIMI, M.D. located?
SHIMA GHAVIMI, M.D. is located at 1015 S HACKETT RD, WATERLOO, IA, 50701. Phone: (319) 234-5990.
What is SHIMA GHAVIMI, M.D.'s NPI number?
SHIMA GHAVIMI, M.D.'s National Provider Identifier (NPI) is 1811316458, issued on 04/10/2014.
Does SHIMA GHAVIMI, M.D. prescribe more brand-name or generic drugs?
SHIMA GHAVIMI, M.D.'s prescribing is 25% brand-name and 75% generic drugs by claim count, with $60K in brand drug costs.
How many Hepatology Physician providers are there in the US?
There are 281 Hepatology Physician providers across 36 states in the US. The average Hepatology Physician provider writes 803 Medicare Part D claims per year.
What drugs does SHIMA GHAVIMI, M.D. prescribe most often?
Based on 2023 Medicare Part D data, SHIMA GHAVIMI, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium, Dexlansoprazole Dr, Gavilyte-G. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SHIMA GHAVIMI, M.D. accept Medicare?
SHIMA GHAVIMI, M.D. appears in CMS Medicare data with 234 Part D claims and 136 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SHIMA GHAVIMI, M.D.'s credentials?
SHIMA GHAVIMI, M.D.'s NPI is 1811316458 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