2026 NPPES data Hematology & Oncology Physician NPI 1285646125 M.D.
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MICHAEL CONJALKA, M.D.

Hematology & Oncology Physician in ELMIRA, New York. 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
959
Medicare Part D claims · 198 beneficiaries · Hematology & Oncology Physician avg: 847
Industry payments
$84.99
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: MICHAEL CONJALKA, M.D. is a Hematology & Oncology Physician ([object Object]) practicing in ELMIRA, New York with a Medicare Part D prescribing footprint of 959 claims across 198 beneficiaries . Industry payments of $84.99 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: MICHAEL CONJALKA, M.D. filed 959 Medicare Part D claims in 2023 across ELMIRA, New York. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

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

MICHAEL CONJALKA, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 08/12/2006

NPI 1285646125

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

959 13% vs specialty avg

2023 prescription claims

Specialty avg: 847

Specialty distribution in New York

How Hematology & Oncology Physician compares to other specialties among New York providers

New York providers

Hematology & Oncology Physician share within New York

1. Hematology & Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hematology & Oncology Physician share within New York

Specialty board-certification context

Estimated specialty board-certified rate — Hematology & Oncology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Hematology & Oncology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Hematology & Oncology 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).

MICHAEL CONJALKA, M.D. is a Hematology & Oncology Physician provider practicing in ELMIRA, New York, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1285646125. 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.

MICHAEL CONJALKA, M.D. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding M.D. credentials at 600 ROE AVENUE, ELMIRA, NY, 14905, with a listed phone of (607) 737-8165. NPI 1285646125 was issued on 08/12/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CONJALKA 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 959 prescription claims written by this provider, covering 198 Medicare beneficiaries and totaling roughly $1.6 million in drug spend, with an opioid prescribing rate of 9.2%. 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.

Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 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

600 ROE AVENUE
ELMIRA, NY 14905

Provider Details

NPI 1285646125
Specialty Hematology & Oncology Physician
Credentials M.D.
Gender Male
NPI Issued 08/12/2006

Hospital and facility affiliations

Facilities where MICHAEL CONJALKA, 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.

ST. MARY'S HEALTHCARE
AMSTERDAM, NY

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

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 MICHAEL CONJALKA, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$85

Largest payer

Astellas Pharma US Inc

Most common payment type

Education

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 — New York NYSBPMC 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 ~100K New York medical licensees in 2023 — they are NOT specific to MICHAEL CONJALKA, M.D.. To verify MICHAEL CONJALKA, M.D.'s current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases

NYSBPMC 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 New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

959
Total Claims
$1.6M
Total Drug Cost
198
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,168
Total Day Supply
33,488
Generic Drug Cost
$164K
Opioid Claims
88 (9.2% rate)
Antibiotic Claims
12

Patient Demographics

Average Patient Age
72.9 years
Avg HCC Risk Score
2.02
Gender Split
59% female / 41% male
Age Distribution
<65: 27, 65-74: 90, 75-84: 61, 85+: 20

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Eliquis
Apixaban
120
Anastrozole
83
Hydroxyurea
66
Pantoprazole Sodium
62
Xarelto
Rivaroxaban
51
Warfarin Sodium
48
Morphine Sulfate Er
Morphine Sulfate
32
Calquence
Acalabrutinib Maleate
30
Oxycodone Hcl
27
Prochlorperazine Maleate
25

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

Hematology & Oncology Physician Overview

How MICHAEL CONJALKA, M.D. fits within the Hematology & Oncology Physician landscape nationally.

11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider

MICHAEL CONJALKA, M.D.'s 959 claims are above the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in New York

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

Compare Hematology & Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MICHAEL CONJALKA, M.D.'s specialty?
MICHAEL CONJALKA, M.D. specializes in Hematology & Oncology Physician and practices in ELMIRA, New York. Credentials: M.D..
How much does MICHAEL CONJALKA, M.D. prescribe under Medicare Part D?
In 2023, MICHAEL CONJALKA, M.D. wrote 959 Medicare Part D claims totaling $1.6M in drug costs for 198 beneficiaries.
Where is MICHAEL CONJALKA, M.D. located?
MICHAEL CONJALKA, M.D. is located at 600 ROE AVENUE, ELMIRA, NY, 14905. Phone: (607) 737-8165.
What is MICHAEL CONJALKA, M.D.'s NPI number?
MICHAEL CONJALKA, M.D.'s National Provider Identifier (NPI) is 1285646125, issued on 08/12/2006.
Does MICHAEL CONJALKA, M.D. prescribe opioids?
Yes, MICHAEL CONJALKA, M.D. had 88 opioid claims in 2023 with an opioid prescribing rate of 9.2%.
How many Hematology & Oncology Physician providers are there in the US?
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does MICHAEL CONJALKA, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MICHAEL CONJALKA, M.D.'s most frequently prescribed drugs include Eliquis, Anastrozole, Hydroxyurea. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MICHAEL CONJALKA, M.D. accept Medicare?
MICHAEL CONJALKA, M.D. appears in CMS Medicare data with 959 Part D claims and 198 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL CONJALKA, M.D.'s credentials?
MICHAEL CONJALKA, M.D.'s NPI is 1285646125 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.
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