2026 NPPES data Interventional Cardiology Physician NPI 1487646972 MD
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WALTER PARHAM, MD

Interventional Cardiology Physician in MOUNT VERNON, 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
2K
Medicare Part D claims · 505 beneficiaries · Interventional Cardiology Physician avg: 3K
Generic prescribing
70%
generic claims · 30% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: WALTER PARHAM, MD is a Interventional Cardiology Physician ([object Object]) practicing in MOUNT VERNON, Illinois with a Medicare Part D prescribing footprint of 2K claims across 505 beneficiaries — 30% brand-name prescribing .

What stands out: WALTER PARHAM, MD filed 2,316 Medicare Part D claims in 2023 across MOUNT VERNON, Illinois. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

WALTER PARHAM, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

WALTER PARHAM, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/19/2005

NPI 1487646972

Primary specialty

Interventional Cardiology Physician

Niche

3,382 US NPIs in this specialty

Medicare Part D claims

2,316 22% vs specialty avg

2023 prescription claims

Specialty avg: 2,984

Specialty distribution in Illinois

How Interventional Cardiology Physician compares to other specialties among Illinois providers

Illinois providers

Interventional Cardiology Physician share within Illinois

1. Interventional Cardiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Interventional Cardiology Physician share within Illinois

Specialty board-certification context

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

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

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

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

WALTER PARHAM, MD is a Interventional Cardiology Physician provider practicing in MOUNT VERNON, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1487646972. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

WALTER PARHAM, MD appears in the CMS NPPES registry as a Interventional Cardiology Physician provider holding MD credentials at 2 GOOD SAMARITAN WAY, MOUNT VERNON, IL, 62864, with a listed phone of (618) 899-3900. NPI 1487646972 was issued on 08/19/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PARHAM 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 2,316 prescription claims written by this provider, covering 505 Medicare beneficiaries and totaling roughly $620K in drug spend, split 30% brand-name and 70% 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.

Interventional Cardiology Physician is a narrow specialty nationwide, with 3,382 enrolled providers across 53 states and an average of 2,984 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

2 GOOD SAMARITAN WAY
MOUNT VERNON, IL 62864

Provider Details

NPI 1487646972
Specialty Interventional Cardiology Physician
Credentials MD
Gender Male
NPI Issued 08/19/2005

Hospital and facility affiliations

Facilities where WALTER PARHAM, MD 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.

GOOD SAMARITAN REGIONAL HEALTH CENTER
MOUNT VERNON, IL
PHYSICIAN SERVICES CORPORATION OF SOUTHERN ILLINOIS INC
MOUNT VERNON, IL
ST MARYS HOSPITAL CENTRALIA ILLINOIS
CENTRALIA, IL

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 WALTER PARHAM, MD. To verify WALTER PARHAM, 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

WALTER PARHAM, MD — brand share 30.0%
Specialty average (est.)

30% brand-name claims vs 70% generic, on 2,316 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.

2,316
Total Claims
$620K
Total Drug Cost
505
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,034
Total Day Supply
120,083
Brand vs Generic
30% brand / 70% generic
Brand Drug Cost
$585K
Generic Drug Cost
$35K

Patient Demographics

Average Patient Age
74.1 years
Avg HCC Risk Score
1.77
Gender Split
56% female / 44% male
Age Distribution
<65: 49, 65-74: 226, 75-84: 165, 85+: 65

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Rosuvastatin Calcium
477
Metoprolol Succinate
277
Atorvastatin Calcium
272
Eliquis
Apixaban
204
Entresto
Sacubitril/Valsartan
185
Jardiance
Empagliflozin
144
Amlodipine Besylate
131
Repatha Sureclick
Evolocumab
77
Clopidogrel
Clopidogrel Bisulfate
61
Spironolactone
61

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

Interventional Cardiology Physician Overview

How WALTER PARHAM, MD fits within the Interventional Cardiology Physician landscape nationally.

3,382
Interventional Cardiology Physician Providers in US
53
States with Interventional Cardiology Physician
2,984
Avg Claims per Provider

WALTER PARHAM, MD's 2,316 claims are below the specialty average of 2,984.

Nearby Interventional Cardiology Physician Providers in Illinois

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

Compare Interventional Cardiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WALTER PARHAM, MD's specialty?
WALTER PARHAM, MD specializes in Interventional Cardiology Physician and practices in MOUNT VERNON, Illinois. Credentials: MD.
How much does WALTER PARHAM, MD prescribe under Medicare Part D?
In 2023, WALTER PARHAM, MD wrote 2,316 Medicare Part D claims totaling $620K in drug costs for 505 beneficiaries.
Where is WALTER PARHAM, MD located?
WALTER PARHAM, MD is located at 2 GOOD SAMARITAN WAY, MOUNT VERNON, IL, 62864. Phone: (618) 899-3900.
What is WALTER PARHAM, MD's NPI number?
WALTER PARHAM, MD's National Provider Identifier (NPI) is 1487646972, issued on 08/19/2005.
Does WALTER PARHAM, MD prescribe more brand-name or generic drugs?
WALTER PARHAM, MD's prescribing is 30% brand-name and 70% generic drugs by claim count, with $585K in brand drug costs.
How many Interventional Cardiology Physician providers are there in the US?
There are 3,382 Interventional Cardiology Physician providers across 53 states in the US. The average Interventional Cardiology Physician provider writes 2,984 Medicare Part D claims per year.
What drugs does WALTER PARHAM, MD prescribe most often?
Based on 2023 Medicare Part D data, WALTER PARHAM, MD's most frequently prescribed drugs include Rosuvastatin Calcium, Metoprolol Succinate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WALTER PARHAM, MD accept Medicare?
WALTER PARHAM, MD appears in CMS Medicare data with 2,316 Part D claims and 505 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WALTER PARHAM, MD's credentials?
WALTER PARHAM, MD's NPI is 1487646972 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