2026 NPPES data Gastroenterology Physician NPI 1891890638 MD
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KOZHIMALA JOHN, MD

Gastroenterology Physician in ZEPHYRHILLS, Florida. 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
2K
Medicare Part D claims · 165 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$17.67
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

KOZHIMALA JOHN, MD filed 1,864 Medicare Part D claims in 2023 as a Gastroenterology Physician in ZEPHYRHILLS, Florida, prescribing 83% generic.

2K
Part D claims, 2023
83%
generic prescribing
$17.67
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.

KOZHIMALA JOHN, MD's Medicare Part D volume vs every U.S. prescriber

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

1,864 Top 17% higher than 83% 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%). This entry sits in this band. 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)

KOZHIMALA JOHN, 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 KOZHIMALA JOHN, MD?

Quality data not reported

NPI registry status

Active

Issued 09/14/2006

NPI 1891890638

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

1,864 124% vs specialty avg

2023 prescription claims

Specialty avg: 833

Specialty distribution in Florida

How Gastroenterology Physician compares to other specialties among Florida providers

Florida providers

Gastroenterology Physician share within Florida

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

Specialty board-certification context

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

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

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

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

KOZHIMALA JOHN, MD appears in the CMS NPPES registry as a Gastroenterology Physician provider holding MD credentials at 6336 FORT KING RD, ZEPHYRHILLS, FL, 33542, with a listed phone of (727) 322-1054. NPI 1891890638 was issued on 09/14/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JOHN 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 1,864 prescription claims written by this provider, covering 165 Medicare beneficiaries and totaling roughly $318K in drug spend, split 17% brand-name and 83% 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.

Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 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

6336 FORT KING RD
ZEPHYRHILLS, FL 33542

Provider Details

NPI 1891890638
Specialty Gastroenterology Physician
Credentials MD
Gender Male
NPI Issued 09/14/2006

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 KOZHIMALA JOHN, MD. Source: openpaymentsdata.cms.gov.

Total received

$18

Largest payer

Ferring Pharmaceuticals Inc.

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.

License & disciplinary context — Florida FLDOH 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 ~75K Florida medical licensees in 2023 — they are NOT specific to KOZHIMALA JOHN, MD. To verify KOZHIMALA JOHN, MD's current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases

FLDOH 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 Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

KOZHIMALA JOHN, MD — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 1,864 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.

1,864
Total Claims
$318K
Total Drug Cost
165
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,899
Total Day Supply
114,414
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$268K
Generic Drug Cost
$48K
Antibiotic Claims
51

Patient Demographics

Average Patient Age
69.0 years
Avg HCC Risk Score
1.79
Gender Split
50% female / 50% male
Age Distribution
<65: 48, 65-74: 63, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What KOZHIMALA JOHN, 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
Atorvastatin Calcium
108
Levothyroxine Sodium
71
Amlodipine Besylate
62
Gabapentin
57
Albuterol Sulfate Hfa
Albuterol Sulfate
56
Losartan Potassium
56
Lisinopril
51
Furosemide
49
Omeprazole
46
Metformin Hcl
44

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

Gastroenterology Physician Overview

How KOZHIMALA JOHN, MD fits within the Gastroenterology Physician landscape nationally.

16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider

KOZHIMALA JOHN, MD's 1,864 claims are above the specialty average of 833.

Nearby Gastroenterology Physician Providers in Florida

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

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

Frequently Asked Questions

What is KOZHIMALA JOHN, MD's specialty?
KOZHIMALA JOHN, MD specializes in Gastroenterology Physician and practices in ZEPHYRHILLS, Florida. Credentials: MD.
How much does KOZHIMALA JOHN, MD prescribe under Medicare Part D?
In 2023, KOZHIMALA JOHN, MD wrote 1,864 Medicare Part D claims totaling $318K in drug costs for 165 beneficiaries.
Where is KOZHIMALA JOHN, MD located?
KOZHIMALA JOHN, MD is located at 6336 FORT KING RD, ZEPHYRHILLS, FL, 33542. Phone: (727) 322-1054.
What is KOZHIMALA JOHN, MD's NPI number?
KOZHIMALA JOHN, MD's National Provider Identifier (NPI) is 1891890638, issued on 09/14/2006.
Does KOZHIMALA JOHN, MD prescribe more brand-name or generic drugs?
KOZHIMALA JOHN, MD's prescribing is 17% brand-name and 83% generic drugs by claim count, with $268K in brand drug costs.
How many Gastroenterology Physician providers are there in the US?
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does KOZHIMALA JOHN, MD prescribe most often?
Based on 2023 Medicare Part D data, KOZHIMALA JOHN, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KOZHIMALA JOHN, MD accept Medicare?
KOZHIMALA JOHN, MD appears in CMS Medicare data with 1,864 Part D claims and 165 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KOZHIMALA JOHN, MD's credentials?
KOZHIMALA JOHN, MD's NPI is 1891890638 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