2026 NPPES data Nephrology Physician NPI 1710953476 MD
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CHARLES JACOBS, MD

Nephrology Physician in WATERVILLE, Maine. 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
270
Medicare Part D claims · 80 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.2722/100
▼ 4 pts below national avg 83.1 · [object Object]
What the federal data reveals: CHARLES JACOBS, MD is a Nephrology Physician ([object Object]) practicing in WATERVILLE, Maine with a Medicare Part D prescribing footprint of 270 claims across 80 beneficiaries — 4% brand-name prescribing . Their CMS MIPS Final Score of 79.2722/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: CHARLES JACOBS, MD reported a CMS MIPS final score of 79.2722 out of 100, below the 83.1 national average, and filed 270 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

CHARLES JACOBS, MD 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).

CHARLES JACOBS, MD at a glance

Near national average

NPI registry status

Active

Issued 02/23/2006

NPI 1710953476

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

270 81% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

MIPS final score

79.2722/100 3.8277999999999963% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Maine

How Nephrology Physician compares to other specialties among Maine providers

Maine providers

Nephrology Physician share within Maine

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

Medicare quality performance — MIPS

CHARLES JACOBS, MD's 2023 MIPS final score plotted against the Nephrology Physician national average

Near national average
MIPS Final Score
79.2722/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nephrology Physician) — 79.2722/100 vs national avg 83.1

0%100%National avg83%79.3%
MIPS final score (Nephrology Physician) — 79.2722/100 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).

CHARLES JACOBS, MD is a Nephrology Physician provider practicing in WATERVILLE, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1710953476. 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.

CHARLES JACOBS, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 149 NORTH ST, WATERVILLE, ME, 04901, with a listed phone of (207) 872-1293. NPI 1710953476 was issued on 02/23/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JACOBS 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 270 prescription claims written by this provider, covering 80 Medicare beneficiaries and totaling roughly $30K in drug spend, split 4% brand-name and 96% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.2722/100 for the 2023 performance year (Quality 73.7265, Cost 60.5143), compared with the national average of 83.1.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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

149 NORTH ST
WATERVILLE, ME 04901

Provider Details

NPI 1710953476
Specialty Nephrology Physician
Credentials MD
Gender Male
NPI Issued 02/23/2006

CMS Quality Score (MIPS)

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

79.2722
Final Score
Avg: 83.1
73.7265
Quality
60.5143
Cost
76
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where CHARLES JACOBS, 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.

MAINEGENERAL MEDICAL CENTER
WATERVILLE, ME

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 · Generic-heavy

CHARLES JACOBS, MD — brand share 4.0%
Specialty average (est.)

4% brand-name claims vs 96% generic, on 270 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.

270
Total Claims
$30K
Total Drug Cost
80
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
763
Total Day Supply
22,838
Brand vs Generic
4% brand / 96% generic
Brand Drug Cost
$10K
Generic Drug Cost
$21K

Patient Demographics

Average Patient Age
68.9 years
Avg HCC Risk Score
3.08
Gender Split
55% female / 45% 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
Calcitriol
37
Allopurinol
22
Hydrochlorothiazide
22
Furosemide
21
Chlorthalidone
19
Losartan Potassium
16
Amlodipine Besylate
14
Prednisone
14

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

Nephrology Physician Overview

How CHARLES JACOBS, MD fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

CHARLES JACOBS, MD's 270 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in Maine

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

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

Frequently Asked Questions

What is CHARLES JACOBS, MD's specialty?
CHARLES JACOBS, MD specializes in Nephrology Physician and practices in WATERVILLE, Maine. Credentials: MD.
How much does CHARLES JACOBS, MD prescribe under Medicare Part D?
In 2023, CHARLES JACOBS, MD wrote 270 Medicare Part D claims totaling $30K in drug costs for 80 beneficiaries.
What is CHARLES JACOBS, MD's Medicare quality score?
CHARLES JACOBS, MD has a CMS MIPS Final Score of 79.2722/100 (Quality: 73.7265, Cost: 60.5143). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CHARLES JACOBS, MD located?
CHARLES JACOBS, MD is located at 149 NORTH ST, WATERVILLE, ME, 04901. Phone: (207) 872-1293.
What is CHARLES JACOBS, MD's NPI number?
CHARLES JACOBS, MD's National Provider Identifier (NPI) is 1710953476, issued on 02/23/2006.
Does CHARLES JACOBS, MD prescribe more brand-name or generic drugs?
CHARLES JACOBS, MD's prescribing is 4% brand-name and 96% generic drugs by claim count, with $10K in brand drug costs.
How many Nephrology Physician providers are there in the US?
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does CHARLES JACOBS, MD prescribe most often?
Based on 2023 Medicare Part D data, CHARLES JACOBS, MD's most frequently prescribed drugs include Calcitriol, Allopurinol, Hydrochlorothiazide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHARLES JACOBS, MD accept Medicare?
CHARLES JACOBS, MD appears in CMS Medicare data with 270 Part D claims and 80 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHARLES JACOBS, MD's credentials?
CHARLES JACOBS, MD's NPI is 1710953476 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.
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