2026 NPPES data Family Medicine Physician NPI 1225033772 M.D.
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TIMOTHY DENNEN, M.D.

Family Medicine Physician in BLOOMSBURG, Pennsylvania. 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
8K
Medicare Part D claims · 470 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

TIMOTHY DENNEN, M.D. filed 8,207 Medicare Part D claims in 2023 as a Family Medicine Physician in BLOOMSBURG, Pennsylvania, prescribing 87% generic.

8K
Part D claims, 2023
87%
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.

TIMOTHY DENNEN, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

8,207 Top 3% higher than 97% 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%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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)

TIMOTHY DENNEN, 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 TIMOTHY DENNEN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/20/2005

NPI 1225033772

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

8,207 140% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Pennsylvania

How Family Medicine Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

Family Medicine Physician share within Pennsylvania

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

Specialty board-certification context

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

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

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

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

TIMOTHY DENNEN, M.D. is a Family Medicine Physician provider practicing in BLOOMSBURG, Pennsylvania, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1225033772. 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.

TIMOTHY DENNEN, M.D. appears in the CMS NPPES registry as a Family Medicine Physician provider holding M.D. credentials at 240 MALL BLVD, BLOOMSBURG, PA, 17815, with a listed phone of (570) 416-5435. NPI 1225033772 was issued on 06/20/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DENNEN 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 8,207 prescription claims written by this provider, covering 470 Medicare beneficiaries and totaling roughly $854K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 1.5%. 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

240 MALL BLVD
BLOOMSBURG, PA 17815

Provider Details

NPI 1225033772
Specialty Family Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 06/20/2005

License & disciplinary context — Pennsylvania PA-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 ~45K Pennsylvania medical licensees in 2023 — they are NOT specific to TIMOTHY DENNEN, M.D.. To verify TIMOTHY DENNEN, M.D.'s current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases

PA-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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

TIMOTHY DENNEN, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 8,207 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.

8,207
Total Claims
$854K
Total Drug Cost
470
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
19,715
Total Day Supply
573,268
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$707K
Generic Drug Cost
$142K
Opioid Claims
120 (1.5% rate)
Antibiotic Claims
145

Patient Demographics

Average Patient Age
75.8 years
Avg HCC Risk Score
1.37
Gender Split
57% female / 43% male

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
683
Rosuvastatin Calcium
331
Levothyroxine Sodium
330
Amlodipine Besylate
316
Lisinopril
310
Omeprazole
265
Metoprolol Succinate
247
Hydrochlorothiazide
222
Losartan Potassium
199
Furosemide
172

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

Family Medicine Physician Overview

How TIMOTHY DENNEN, M.D. fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

TIMOTHY DENNEN, M.D.'s 8,207 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Pennsylvania

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

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

Frequently Asked Questions

What is TIMOTHY DENNEN, M.D.'s specialty?
TIMOTHY DENNEN, M.D. specializes in Family Medicine Physician and practices in BLOOMSBURG, Pennsylvania. Credentials: M.D..
How much does TIMOTHY DENNEN, M.D. prescribe under Medicare Part D?
In 2023, TIMOTHY DENNEN, M.D. wrote 8,207 Medicare Part D claims totaling $854K in drug costs for 470 beneficiaries.
Where is TIMOTHY DENNEN, M.D. located?
TIMOTHY DENNEN, M.D. is located at 240 MALL BLVD, BLOOMSBURG, PA, 17815. Phone: (570) 416-5435.
What is TIMOTHY DENNEN, M.D.'s NPI number?
TIMOTHY DENNEN, M.D.'s National Provider Identifier (NPI) is 1225033772, issued on 06/20/2005.
Does TIMOTHY DENNEN, M.D. prescribe more brand-name or generic drugs?
TIMOTHY DENNEN, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $707K in brand drug costs.
Does TIMOTHY DENNEN, M.D. prescribe opioids?
Yes, TIMOTHY DENNEN, M.D. had 120 opioid claims in 2023 with an opioid prescribing rate of 1.5%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does TIMOTHY DENNEN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, TIMOTHY DENNEN, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Rosuvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TIMOTHY DENNEN, M.D. accept Medicare?
TIMOTHY DENNEN, M.D. appears in CMS Medicare data with 8,207 Part D claims and 470 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TIMOTHY DENNEN, M.D.'s credentials?
TIMOTHY DENNEN, M.D.'s NPI is 1225033772 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