2026 NPPES data Adolescent Medicine (Family Medicine) Physician NPI 1861532350 MD
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JEFFREY KELLOGG, MD

Adolescent Medicine (Family Medicine) Physician in SHEPHERDSTOWN, West 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 · 234 beneficiaries · Adolescent Medicine (Family Medicine) Physician avg: 3K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JEFFREY KELLOGG, MD filed 1,490 Medicare Part D claims in 2023 as a Adolescent Medicine (Family Medicine) Physician in SHEPHERDSTOWN, West Virginia, prescribing 91% generic.

1K
Part D claims, 2023
91%
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.

JEFFREY KELLOGG, MD's Medicare Part D volume vs every U.S. prescriber

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

1,490 Top 20% higher than 80% 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%). This entry sits in this band. 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)

JEFFREY KELLOGG, 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 JEFFREY KELLOGG, MD?

Quality data not reported

NPI registry status

Active

Issued 02/07/2007

NPI 1861532350

Primary specialty

Adolescent Medicine (Family Medicine) Physician

Rare

261 US NPIs in this specialty

Medicare Part D claims

1,490 48% vs specialty avg

2023 prescription claims

Specialty avg: 2,881

Specialty distribution in West Virginia

How Adolescent Medicine (Family Medicine) Physician compares to other specialties among West Virginia providers

West Virginia providers

Adolescent Medicine (Family Medicine) Physician share within West Virginia

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

Specialty board-certification context

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

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

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

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

JEFFREY KELLOGG, MD appears in the CMS NPPES registry as a Adolescent Medicine (Family Medicine) Physician provider holding MD credentials at 45 MADDEX DR, SHEPHERDSTOWN, WV, 25443, with a listed phone of (304) 876-9321. NPI 1861532350 was issued on 02/07/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KELLOGG 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 1,490 prescription claims written by this provider, covering 234 Medicare beneficiaries and totaling roughly $165K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 1.9%. 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.

Adolescent Medicine (Family Medicine) Physician is a narrow specialty nationwide, with 261 enrolled providers across 44 states and an average of 2,881 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

45 MADDEX DR
SHEPHERDSTOWN, WV 25443

Provider Details

NPI 1861532350
Specialty Adolescent Medicine (Family Medicine) Physician
Credentials MD
Gender Male
NPI Issued 02/07/2007

Brand vs generic prescribing mix · Generic-heavy

JEFFREY KELLOGG, MD — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 1,490 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.

1,490
Total Claims
$165K
Total Drug Cost
234
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,926
Total Day Supply
116,428
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$132K
Generic Drug Cost
$32K
Opioid Claims
29 (1.9% rate)
Antibiotic Claims
11

Patient Demographics

Average Patient Age
73.2 years
Avg HCC Risk Score
0.83
Gender Split
53% female / 47% male
Age Distribution
<65: 16, 65-74: 126, 75-84: 74, 85+: 18

Top Prescribed Drugs (Medicare Part D)

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

What JEFFREY KELLOGG, 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
Amlodipine Besylate
89
Metformin Hcl Er
Metformin Hcl
78
Rosuvastatin Calcium
75
Levothyroxine Sodium
67
Atorvastatin Calcium
55
Olmesartan Medoxomil
52
Lisinopril
51
Lisinopril-Hydrochlorothiazide
Lisinopril/Hydrochlorothiazide
46
Omeprazole
30
Olmesartan-Hydrochlorothiazide
Olmesartan/Hydrochlorothiazide
29

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

Adolescent Medicine (Family Medicine) Physician Overview

How JEFFREY KELLOGG, MD fits within the Adolescent Medicine (Family Medicine) Physician landscape nationally.

261
Adolescent Medicine (Family Medicine) Physician Providers in US
44
States with Adolescent Medicine (Family Medicine) Physician
2,881
Avg Claims per Provider

JEFFREY KELLOGG, MD's 1,490 claims are below the specialty average of 2,881.

Frequently Asked Questions

What is JEFFREY KELLOGG, MD's specialty?
JEFFREY KELLOGG, MD specializes in Adolescent Medicine (Family Medicine) Physician and practices in SHEPHERDSTOWN, West Virginia. Credentials: MD.
How much does JEFFREY KELLOGG, MD prescribe under Medicare Part D?
In 2023, JEFFREY KELLOGG, MD wrote 1,490 Medicare Part D claims totaling $165K in drug costs for 234 beneficiaries.
Where is JEFFREY KELLOGG, MD located?
JEFFREY KELLOGG, MD is located at 45 MADDEX DR, SHEPHERDSTOWN, WV, 25443. Phone: (304) 876-9321.
What is JEFFREY KELLOGG, MD's NPI number?
JEFFREY KELLOGG, MD's National Provider Identifier (NPI) is 1861532350, issued on 02/07/2007.
Does JEFFREY KELLOGG, MD prescribe more brand-name or generic drugs?
JEFFREY KELLOGG, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $132K in brand drug costs.
Does JEFFREY KELLOGG, MD prescribe opioids?
Yes, JEFFREY KELLOGG, MD had 29 opioid claims in 2023 with an opioid prescribing rate of 1.9%.
How many Adolescent Medicine (Family Medicine) Physician providers are there in the US?
There are 261 Adolescent Medicine (Family Medicine) Physician providers across 44 states in the US. The average Adolescent Medicine (Family Medicine) Physician provider writes 2,881 Medicare Part D claims per year.
What drugs does JEFFREY KELLOGG, MD prescribe most often?
Based on 2023 Medicare Part D data, JEFFREY KELLOGG, MD's most frequently prescribed drugs include Amlodipine Besylate, Metformin Hcl Er, Rosuvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JEFFREY KELLOGG, MD accept Medicare?
JEFFREY KELLOGG, MD appears in CMS Medicare data with 1,490 Part D claims and 234 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JEFFREY KELLOGG, MD's credentials?
JEFFREY KELLOGG, MD's NPI is 1861532350 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