2026 NPPES data Internal Medicine Physician NPI 1548981137 MD
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LEEN AL-FARIS, MD

Internal Medicine Physician in WOODSTOCK, Virginia. 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
753
Medicare Part D claims · 100 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: LEEN AL-FARIS, MD is a Internal Medicine Physician ([object Object]) practicing in WOODSTOCK, Virginia with a Medicare Part D prescribing footprint of 753 claims across 100 beneficiaries — 25% brand-name prescribing .

What stands out: LEEN AL-FARIS, MD filed 753 Medicare Part D claims in 2023 across WOODSTOCK, Virginia. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

LEEN AL-FARIS, MD 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).

LEEN AL-FARIS, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 09/12/2022

NPI 1548981137

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

753 72% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Virginia

How Internal Medicine Physician compares to other specialties among Virginia providers

Virginia providers

Internal Medicine Physician share within Virginia

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

Specialty board-certification context

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

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

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

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

LEEN AL-FARIS, MD is a Internal Medicine Physician provider practicing in WOODSTOCK, Virginia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1548981137. 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.

LEEN AL-FARIS, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 759 S MAIN ST, WOODSTOCK, VA, 22664, with a listed phone of (540) 459-1383. NPI 1548981137 was issued on 09/12/2022. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AL-FARIS 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 753 prescription claims written by this provider, covering 100 Medicare beneficiaries and totaling roughly $115K in drug spend, split 25% brand-name and 75% generic by claim count, with an opioid prescribing rate of 3.9%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

759 S MAIN ST
WOODSTOCK, VA 22664

Provider Details

NPI 1548981137
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 09/12/2022

Hospital and facility affiliations

Facilities where LEEN AL-FARIS, 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.

SHENANDOAH MEMORIAL HOSPITAL, INC.
WOODSTOCK, VA

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

Brand vs generic prescribing mix · Above average

LEEN AL-FARIS, MD — brand share 25.0%
Specialty average (est.)

25% brand-name claims vs 75% generic, on 753 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.

753
Total Claims
$115K
Total Drug Cost
100
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,090
Total Day Supply
30,866
Brand vs Generic
25% brand / 75% generic
Brand Drug Cost
$104K
Generic Drug Cost
$11K
Opioid Claims
29 (3.9% rate)
Antibiotic Claims
23

Patient Demographics

Average Patient Age
66.8 years
Avg HCC Risk Score
2.44
Gender Split
60% female / 40% male
Age Distribution
<65: 38, 65-74: 30, 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
Atorvastatin Calcium
60
Lisinopril
33
Gabapentin
28
Carvedilol
23
Amlodipine Besylate
22
Trulicity
Dulaglutide
22
Diclofenac Sodium
19
Oxcarbazepine
17
Levetiracetam
16
Furosemide
14

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

Internal Medicine Physician Overview

How LEEN AL-FARIS, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

LEEN AL-FARIS, MD's 753 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Virginia

Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as AL-FARIS.

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is LEEN AL-FARIS, MD's specialty?
LEEN AL-FARIS, MD specializes in Internal Medicine Physician and practices in WOODSTOCK, Virginia. Credentials: MD.
How much does LEEN AL-FARIS, MD prescribe under Medicare Part D?
In 2023, LEEN AL-FARIS, MD wrote 753 Medicare Part D claims totaling $115K in drug costs for 100 beneficiaries.
Where is LEEN AL-FARIS, MD located?
LEEN AL-FARIS, MD is located at 759 S MAIN ST, WOODSTOCK, VA, 22664. Phone: (540) 459-1383.
What is LEEN AL-FARIS, MD's NPI number?
LEEN AL-FARIS, MD's National Provider Identifier (NPI) is 1548981137, issued on 09/12/2022.
Does LEEN AL-FARIS, MD prescribe more brand-name or generic drugs?
LEEN AL-FARIS, MD's prescribing is 25% brand-name and 75% generic drugs by claim count, with $104K in brand drug costs.
Does LEEN AL-FARIS, MD prescribe opioids?
Yes, LEEN AL-FARIS, MD had 29 opioid claims in 2023 with an opioid prescribing rate of 3.9%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does LEEN AL-FARIS, MD prescribe most often?
Based on 2023 Medicare Part D data, LEEN AL-FARIS, MD's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LEEN AL-FARIS, MD accept Medicare?
LEEN AL-FARIS, MD appears in CMS Medicare data with 753 Part D claims and 100 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LEEN AL-FARIS, MD's credentials?
LEEN AL-FARIS, MD's NPI is 1548981137 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