2026 NPPES data Internal Medicine Physician NPI 1225691041 MD
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Zachary Tugaoen, MD

Internal Medicine Physician in Chapel Hill, North Carolina. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 172,858 in Internal Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration — see our methodology.

Federal data — no proprietary rating. We show these CMS records as-is — no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
289
Medicare Part D claims · 59 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.0K
12 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Zachary Tugaoen, MD filed 289 Medicare Part D claims in 2023 as a Internal Medicine Physician in Chapel Hill, North Carolina, prescribing 79% generic.

289
Part D claims, 2023
79%
generic prescribing
$1.0K
industry payments (Sunshine Act)

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.

Zachary Tugaoen, MD's Medicare Part D volume vs every U.S. prescriber

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

289 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-eligible specialty (heuristic — not verified)

Zachary Tugaoen, MD 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 Zachary Tugaoen, MD?

Quality data not reported

NPI registry status

Active

Issued 04/17/2019

NPI 1225691041

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

289 89% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in North Carolina

How Internal Medicine Physician compares to other specialties among North Carolina providers

North Carolina providers

Largest specialties in North Carolina (% of in-state providers)

Clinical Social Worker — 7.1%Clinical Social Worker7.1%Behavior Technician — 6.4%Behavior Technician6.4%Pharmacist — 5%Pharmacist5%Student in an Organized Health Care Education/Training Program — 4.5%Student in an Organized Health Care Education/Training Program4.5%Physical Therapist — 4.3%Physical Therapist4.3%Physician Assistant — 4.2%Physician Assistant4.2%Internal Medicine Physician — 2.5%Internal Medicine Physician2.5%
Largest specialties in North Carolina (% of in-state providers)

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).

Zachary Tugaoen, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 102 MASON FARM RD, Chapel Hill, NC, 27599, with a listed phone of (984) 974-4462. NPI 1225691041 was issued on 04/17/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Tugaoen 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 289 prescription claims written by this provider, covering 59 Medicare beneficiaries and totaling roughly $64K in drug spend, split 21% brand-name and 79% 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.

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

102 MASON FARM RD
Chapel Hill, NC 27599

Provider Details

NPI 1225691041
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 04/17/2019

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 Zachary Tugaoen, MD. Source: openpaymentsdata.cms.gov.

Total received

$1.0K

Largest payer

ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)

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 · Typical

Zachary Tugaoen, MD — brand share 21.0%
Internal Medicine Physician average

21% brand-name claims vs 79% generic, on 289 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.

289
Total Claims
$64K
Total Drug Cost
59
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
597
Total Day Supply
17,669
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$61K
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
73.3 years
Avg HCC Risk Score
2.44
Gender Split
32% female / 68% male

Top Prescribed Drugs (Medicare Part D)

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

What Zachary Tugaoen, MD 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
Metoprolol Succinate
41
Atorvastatin Calcium
30
Entresto
Sacubitril/Valsartan
27
Spironolactone
25
Carvedilol
19
Jardiance
Empagliflozin
15
Amlodipine Besylate
12
Diltiazem 24hr Er (Cd)
Diltiazem Hcl
11
Lisinopril
11

* 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 Zachary Tugaoen, 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

Zachary Tugaoen, MD's 289 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Tugaoen.

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the North Carolina medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Zachary Tugaoen, MD's specialty?
Zachary Tugaoen, MD specializes in Internal Medicine Physician and practices in Chapel Hill, North Carolina. Credentials: MD.
How much does Zachary Tugaoen, MD prescribe under Medicare Part D?
In 2023, Zachary Tugaoen, MD wrote 289 Medicare Part D claims totaling $64K in drug costs for 59 beneficiaries.
Where is Zachary Tugaoen, MD located?
Zachary Tugaoen, MD is located at 102 MASON FARM RD, Chapel Hill, NC, 27599. Phone: (984) 974-4462.
What is Zachary Tugaoen, MD's NPI number?
Zachary Tugaoen, MD's National Provider Identifier (NPI) is 1225691041, issued on 04/17/2019.
Does Zachary Tugaoen, MD prescribe more brand-name or generic drugs?
Zachary Tugaoen, MD's prescribing is 21% brand-name and 79% generic drugs by claim count, with $61K in brand drug costs.
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 Zachary Tugaoen, MD prescribe most often?
Based on 2023 Medicare Part D data, Zachary Tugaoen, MD's most frequently prescribed drugs include Metoprolol Succinate, Atorvastatin Calcium, Entresto. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Zachary Tugaoen, MD accept Medicare?
Zachary Tugaoen, MD appears in CMS Medicare data with 289 Part D claims and 59 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Zachary Tugaoen, MD's credentials?
Zachary Tugaoen, MD's NPI is 1225691041 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

Compiled from official public sources by the PlainDoctor editorial team.