2026 NPPES data Hospitalist Physician NPI 1023280328 M.D.
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CHRISTOPHER MERTZ, M.D.

Hospitalist Physician in CONCORD, New Hampshire. 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
301
Medicare Part D claims · 135 beneficiaries · Hospitalist Physician avg: 888
MIPS score
89.3601/100
▲ 6 pts above national avg 83.1 · [object Object]

What the federal data shows

CHRISTOPHER MERTZ, M.D. reported a CMS MIPS final score of 89.3601/100 — above the 83.1 national average — and filed 301 Medicare Part D claims in 2023.

89.3601/100
MIPS score · +6 vs avg
301
Part D claims, 2023
Likely
board-certified (heuristic)

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.

CHRISTOPHER MERTZ, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

89 Top 42% higher than 58% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

CHRISTOPHER MERTZ, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about CHRISTOPHER MERTZ, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 03/26/2008

NPI 1023280328

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

301 66% vs specialty avg

2023 prescription claims

Specialty avg: 888

MIPS final score

89.3601/100 6.260100000000008% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in New Hampshire

How Hospitalist Physician compares to other specialties among New Hampshire providers

New Hampshire providers

Hospitalist Physician share within New Hampshire

1. Hospitalist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospitalist Physician share within New Hampshire

Medicare quality performance — MIPS

CHRISTOPHER MERTZ, M.D.'s 2023 MIPS final score plotted against the Hospitalist Physician national average

High performer (top quartile)
MIPS Final Score
89.3601/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hospitalist Physician) — 89.3601/100 vs national avg 83.1

0%100%National avg83%89.4%
MIPS final score (Hospitalist Physician) — 89.3601/100 vs national avg 83.1

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).

CHRISTOPHER MERTZ, M.D. appears in the CMS NPPES registry as a Hospitalist Physician provider holding M.D. credentials at 250 PLEASANT ST, CONCORD, NH, 03301, with a listed phone of (603) 227-7000. NPI 1023280328 was issued on 03/26/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MERTZ 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 301 prescription claims written by this provider, covering 135 Medicare beneficiaries and totaling roughly $17K in drug spend, with an opioid prescribing rate of 4.7%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 89.3601/100 for the 2023 performance year (Quality 72.1931), compared with the national average of 83.1.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

250 PLEASANT ST
CONCORD, NH 03301

Provider Details

NPI 1023280328
Specialty Hospitalist Physician
Credentials M.D.
Gender Male
NPI Issued 03/26/2008

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

89.3601
Final Score
Avg: 83.1
72.1931
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where CHRISTOPHER MERTZ, M.D. 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.

CONCORD HOSPITAL INC
CONCORD, NH

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

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

301
Total Claims
$17K
Total Drug Cost
135
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
323
Total Day Supply
6,875
Generic Drug Cost
$5K
Opioid Claims
14 (4.7% rate)
Antibiotic Claims
40

Patient Demographics

Average Patient Age
74.1 years
Avg HCC Risk Score
2.09
Gender Split
52% female / 48% male
Age Distribution
<65: 14, 65-74: 61, 75-84: 37, 85+: 23

Top Prescribed Drugs (Medicare Part D)

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

What CHRISTOPHER MERTZ, M.D. 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
Prednisone
17
Pantoprazole Sodium
14
Furosemide
13
Albuterol Sulfate Hfa
Albuterol Sulfate
11
Azithromycin
11

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

Hospitalist Physician Overview

How CHRISTOPHER MERTZ, M.D. fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

CHRISTOPHER MERTZ, M.D.'s 301 claims are below the specialty average of 888.

Nearby Hospitalist Physician Providers in New Hampshire

Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as MERTZ.

Compare Hospitalist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CHRISTOPHER MERTZ, M.D.'s specialty?
CHRISTOPHER MERTZ, M.D. specializes in Hospitalist Physician and practices in CONCORD, New Hampshire. Credentials: M.D..
How much does CHRISTOPHER MERTZ, M.D. prescribe under Medicare Part D?
In 2023, CHRISTOPHER MERTZ, M.D. wrote 301 Medicare Part D claims totaling $17K in drug costs for 135 beneficiaries.
What is CHRISTOPHER MERTZ, M.D.'s Medicare quality score?
CHRISTOPHER MERTZ, M.D. has a CMS MIPS Final Score of 89.3601/100 (Quality: 72.1931). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CHRISTOPHER MERTZ, M.D. located?
CHRISTOPHER MERTZ, M.D. is located at 250 PLEASANT ST, CONCORD, NH, 03301. Phone: (603) 227-7000.
What is CHRISTOPHER MERTZ, M.D.'s NPI number?
CHRISTOPHER MERTZ, M.D.'s National Provider Identifier (NPI) is 1023280328, issued on 03/26/2008.
Does CHRISTOPHER MERTZ, M.D. prescribe opioids?
Yes, CHRISTOPHER MERTZ, M.D. had 14 opioid claims in 2023 with an opioid prescribing rate of 4.7%.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does CHRISTOPHER MERTZ, M.D. prescribe most often?
Based on 2023 Medicare Part D data, CHRISTOPHER MERTZ, M.D.'s most frequently prescribed drugs include Prednisone, Pantoprazole Sodium, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHRISTOPHER MERTZ, M.D. accept Medicare?
CHRISTOPHER MERTZ, M.D. appears in CMS Medicare data with 301 Part D claims and 135 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHRISTOPHER MERTZ, M.D.'s credentials?
CHRISTOPHER MERTZ, M.D.'s NPI is 1023280328 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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