2026 NPPES data Reproductive Endocrinology Physician NPI 1093391047 MD
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KENDALL BIELAK, MD

Reproductive Endocrinology Physician in CHAPEL HILL, North Carolina. 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
32
Medicare Part D claims · 17 beneficiaries · Reproductive Endocrinology Physician avg: 104
Generic prescribing
59%
generic claims · 41% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$153.33
3 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

KENDALL BIELAK, MD filed 32 Medicare Part D claims in 2023 as a Reproductive Endocrinology Physician in CHAPEL HILL, North Carolina, prescribing 59% generic.

32
Part D claims, 2023
59%
generic prescribing
$153.33
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.

KENDALL BIELAK, MD's Medicare Part D volume vs every U.S. prescriber

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

32 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 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)

KENDALL BIELAK, 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 KENDALL BIELAK, MD?

Quality data not reported

NPI registry status

Active

Issued 03/21/2021

NPI 1093391047

Primary specialty

Reproductive Endocrinology Physician

Niche

1,413 US NPIs in this specialty

Medicare Part D claims

32 69% vs specialty avg

2023 prescription claims

Specialty avg: 104

Specialty distribution in North Carolina

How Reproductive Endocrinology Physician compares to other specialties among North Carolina providers

North Carolina providers

Reproductive Endocrinology Physician share within North Carolina

1. Reproductive Endocrinology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Reproductive Endocrinology Physician share within North Carolina

Specialty board-certification context

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

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

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

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

KENDALL BIELAK, MD is a Reproductive Endocrinology Physician provider practicing in CHAPEL HILL, North Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1093391047. 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.

KENDALL BIELAK, MD appears in the CMS NPPES registry as a Reproductive Endocrinology Physician provider holding MD credentials at 101 MANNING DR, CHAPEL HILL, NC, 27514, with a listed phone of (919) 966-7890. NPI 1093391047 was issued on 03/21/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BIELAK 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 32 prescription claims written by this provider, covering 17 Medicare beneficiaries and totaling roughly $3K in drug spend, split 41% brand-name and 59% 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.

Reproductive Endocrinology Physician is a narrow specialty nationwide, with 1,413 enrolled providers across 48 states and an average of 104 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

101 MANNING DR
CHAPEL HILL, NC 27514

Provider Details

NPI 1093391047
Specialty Reproductive Endocrinology Physician
Credentials MD
Gender Female
NPI Issued 03/21/2021

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 KENDALL BIELAK, MD. Source: openpaymentsdata.cms.gov.

Total received

$153

Largest payer

EMD Serono, 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.

Brand vs generic prescribing mix · Above average

KENDALL BIELAK, MD — brand share 41.0%
Specialty average (est.)

41% brand-name claims vs 59% generic, on 32 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.

32
Total Claims
$3K
Total Drug Cost
17
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
37
Total Day Supply
698
Brand vs Generic
41% brand / 59% generic
Brand Drug Cost
$3K
Generic Drug Cost
$163

Patient Demographics

Average Patient Age
65.5 years
Avg HCC Risk Score
1.30
Gender Split
100% female / 0% 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
Slynd
Drospirenone
12

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

Reproductive Endocrinology Physician Overview

How KENDALL BIELAK, MD fits within the Reproductive Endocrinology Physician landscape nationally.

1,413
Reproductive Endocrinology Physician Providers in US
48
States with Reproductive Endocrinology Physician
104
Avg Claims per Provider

KENDALL BIELAK, MD's 32 claims are below the specialty average of 104.

Nearby Reproductive Endocrinology Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as BIELAK.

Compare Reproductive Endocrinology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KENDALL BIELAK, MD's specialty?
KENDALL BIELAK, MD specializes in Reproductive Endocrinology Physician and practices in CHAPEL HILL, North Carolina. Credentials: MD.
How much does KENDALL BIELAK, MD prescribe under Medicare Part D?
In 2023, KENDALL BIELAK, MD wrote 32 Medicare Part D claims totaling $3K in drug costs for 17 beneficiaries.
Where is KENDALL BIELAK, MD located?
KENDALL BIELAK, MD is located at 101 MANNING DR, CHAPEL HILL, NC, 27514. Phone: (919) 966-7890.
What is KENDALL BIELAK, MD's NPI number?
KENDALL BIELAK, MD's National Provider Identifier (NPI) is 1093391047, issued on 03/21/2021.
Does KENDALL BIELAK, MD prescribe more brand-name or generic drugs?
KENDALL BIELAK, MD's prescribing is 41% brand-name and 59% generic drugs by claim count, with $3K in brand drug costs.
How many Reproductive Endocrinology Physician providers are there in the US?
There are 1,413 Reproductive Endocrinology Physician providers across 48 states in the US. The average Reproductive Endocrinology Physician provider writes 104 Medicare Part D claims per year.
What drugs does KENDALL BIELAK, MD prescribe most often?
Based on 2023 Medicare Part D data, KENDALL BIELAK, MD's most frequently prescribed drugs include Slynd. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KENDALL BIELAK, MD accept Medicare?
KENDALL BIELAK, MD appears in CMS Medicare data with 32 Part D claims and 17 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KENDALL BIELAK, MD's credentials?
KENDALL BIELAK, MD's NPI is 1093391047 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