2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1275502510 MD, FCCP
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JONATHAN LENZEN, MD, FCCP

Critical Care Medicine (Internal Medicine) Physician in SOUTH BOSTON, 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
1K
Medicare Part D claims · 225 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
42%
generic claims · 58% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JONATHAN LENZEN, MD, FCCP filed 1,229 Medicare Part D claims in 2023 as a Critical Care Medicine (Internal Medicine) Physician in SOUTH BOSTON, Virginia, prescribing 42% generic.

1K
Part D claims, 2023
42%
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.

JONATHAN LENZEN, MD, FCCP's Medicare Part D volume vs every U.S. prescriber

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

1,229 Top 22% higher than 78% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). This entry sits in this band. 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)

JONATHAN LENZEN, MD, FCCP 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 JONATHAN LENZEN, MD, FCCP?

Quality data not reported

NPI registry status

Active

Issued 03/17/2006

NPI 1275502510

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,631 US NPIs in this specialty

Medicare Part D claims

1,229 15% vs specialty avg

2023 prescription claims

Specialty avg: 1,069

Specialty distribution in Virginia

How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Virginia providers

Virginia providers

Critical Care Medicine (Internal Medicine) Physician share within Virginia

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

Specialty board-certification context

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

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

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

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

JONATHAN LENZEN, MD, FCCP appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding MD, FCCP credentials at 2210 WILBORN AVE, SOUTH BOSTON, VA, 24592, with a listed phone of (434) 575-5864. NPI 1275502510 was issued on 03/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LENZEN 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 1,229 prescription claims written by this provider, covering 225 Medicare beneficiaries and totaling roughly $710K in drug spend, split 58% brand-name and 42% 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.

Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,631 enrolled providers across 53 states and an average of 1,069 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

2210 WILBORN AVE
SOUTH BOSTON, VA 24592

Provider Details

NPI 1275502510
Specialty Critical Care Medicine (Internal Medicine) Physician
Credentials MD, FCCP
Gender Male
NPI Issued 03/17/2006

Brand vs generic prescribing mix · Brand-heavy

JONATHAN LENZEN, MD, FCCP — brand share 58.0%
Specialty average (est.)

58% brand-name claims vs 42% generic, on 1,229 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.

1,229
Total Claims
$710K
Total Drug Cost
225
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,408
Total Day Supply
33,812
Brand vs Generic
58% brand / 42% generic
Brand Drug Cost
$700K
Generic Drug Cost
$10K
Antibiotic Claims
70

Patient Demographics

Average Patient Age
71.0 years
Avg HCC Risk Score
1.92
Gender Split
60% female / 40% male
Age Distribution
<65: 44, 65-74: 108, 75-84: 60, 85+: 13

Top Prescribed Drugs (Medicare Part D)

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

What JONATHAN LENZEN, MD, FCCP 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
Albuterol Sulfate Hfa
Albuterol Sulfate
240
Prednisone
231
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
203
Stiolto Respimat
Tiotropium Br/Olodaterol Hcl
65
Breztri Aerosphere
Budesonide/Glycopyr/Formoterol
50
Symbicort
Budesonide/Formoterol Fumarate
47
Breo Ellipta
Fluticasone/Vilanterol
38
Ventolin Hfa
Albuterol Sulfate
37
Montelukast Sodium
34
Azithromycin
31

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

Critical Care Medicine (Internal Medicine) Physician Overview

How JONATHAN LENZEN, MD, FCCP fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,631
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider

JONATHAN LENZEN, MD, FCCP's 1,229 claims are above the specialty average of 1,069.

Nearby Critical Care Medicine (Internal Medicine) Physician Providers in Virginia

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

Compare Critical Care Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JONATHAN LENZEN, MD, FCCP's specialty?
JONATHAN LENZEN, MD, FCCP specializes in Critical Care Medicine (Internal Medicine) Physician and practices in SOUTH BOSTON, Virginia. Credentials: MD, FCCP.
How much does JONATHAN LENZEN, MD, FCCP prescribe under Medicare Part D?
In 2023, JONATHAN LENZEN, MD, FCCP wrote 1,229 Medicare Part D claims totaling $710K in drug costs for 225 beneficiaries.
Where is JONATHAN LENZEN, MD, FCCP located?
JONATHAN LENZEN, MD, FCCP is located at 2210 WILBORN AVE, SOUTH BOSTON, VA, 24592. Phone: (434) 575-5864.
What is JONATHAN LENZEN, MD, FCCP's NPI number?
JONATHAN LENZEN, MD, FCCP's National Provider Identifier (NPI) is 1275502510, issued on 03/17/2006.
Does JONATHAN LENZEN, MD, FCCP prescribe more brand-name or generic drugs?
JONATHAN LENZEN, MD, FCCP's prescribing is 58% brand-name and 42% generic drugs by claim count, with $700K in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US?
There are 6,631 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does JONATHAN LENZEN, MD, FCCP prescribe most often?
Based on 2023 Medicare Part D data, JONATHAN LENZEN, MD, FCCP's most frequently prescribed drugs include Albuterol Sulfate Hfa, Prednisone, Trelegy Ellipta. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JONATHAN LENZEN, MD, FCCP accept Medicare?
JONATHAN LENZEN, MD, FCCP appears in CMS Medicare data with 1,229 Part D claims and 225 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JONATHAN LENZEN, MD, FCCP's credentials?
JONATHAN LENZEN, MD, FCCP's NPI is 1275502510 with credentials MD, FCCP. 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