2026 NPPES data Pediatric Endocrinology Physician NPI 1770840126 M.D.
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SHELLY MERCER, M.D.

Pediatric Endocrinology Physician in TULSA, Oklahoma. 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
20
Medicare Part D claims · Pediatric Endocrinology Physician avg: 151

What the federal data shows

SHELLY MERCER, M.D. filed 20 Medicare Part D claims in 2023 as a Pediatric Endocrinology Physician in TULSA, Oklahoma.

20
Part D claims, 2023
Likely
board-certified (heuristic)

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.

SHELLY MERCER, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

20 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 certification likely (heuristic — not verified)

SHELLY MERCER, 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).

What does the federal data show about SHELLY MERCER, M.D.?

Quality data not reported

NPI registry status

Active

Issued 04/23/2012

NPI 1770840126

Primary specialty

Pediatric Endocrinology Physician

Niche

1,457 US NPIs in this specialty

Medicare Part D claims

20 87% vs specialty avg

2023 prescription claims

Specialty avg: 151

Specialty distribution in Oklahoma

How Pediatric Endocrinology Physician compares to other specialties among Oklahoma providers

Oklahoma providers

Pediatric Endocrinology Physician share within Oklahoma

1. Pediatric Endocrinology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pediatric Endocrinology Physician share within Oklahoma

Specialty board-certification context

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

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

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

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

SHELLY MERCER, M.D. appears in the CMS NPPES registry as a Pediatric Endocrinology Physician provider holding M.D. credentials at 4444 E 41ST ST, TULSA, OK, 74135, with a listed phone of (918) 619-4400. NPI 1770840126 was issued on 04/23/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MERCER 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 20 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $701 in drug spend. 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.

Pediatric Endocrinology Physician is a narrow specialty nationwide, with 1,457 enrolled providers across 51 states and an average of 151 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

4444 E 41ST ST
TULSA, OK 74135

Provider Details

NPI 1770840126
Specialty Pediatric Endocrinology Physician
Credentials M.D.
Gender Female
NPI Issued 04/23/2012

Hospital and facility affiliations

Facilities where SHELLY MERCER, 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.

BOARD OF REGENTS OF THE UNIVERSITY OF OKLAHOMA OU PHYSICIANS TULSA
TULSA, OK

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

Medicare Part D Prescribing Data

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

20
Total Claims
$701
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
49
Total Day Supply
1,445
Brand Drug Cost
$0
Generic Drug Cost
$701

Patient Demographics

Average Patient Age
38.0 years
Avg HCC Risk Score
1.02

Pediatric Endocrinology Physician Overview

How SHELLY MERCER, M.D. fits within the Pediatric Endocrinology Physician landscape nationally.

1,457
Pediatric Endocrinology Physician Providers in US
51
States with Pediatric Endocrinology Physician
151
Avg Claims per Provider

SHELLY MERCER, M.D.'s 20 claims are below the specialty average of 151.

Nearby Pediatric Endocrinology Physician Providers in Oklahoma

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

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

Frequently Asked Questions

What is SHELLY MERCER, M.D.'s specialty?
SHELLY MERCER, M.D. specializes in Pediatric Endocrinology Physician and practices in TULSA, Oklahoma. Credentials: M.D..
How much does SHELLY MERCER, M.D. prescribe under Medicare Part D?
In 2023, SHELLY MERCER, M.D. wrote 20 Medicare Part D claims totaling $701 in drug costs for N/A beneficiaries.
Where is SHELLY MERCER, M.D. located?
SHELLY MERCER, M.D. is located at 4444 E 41ST ST, TULSA, OK, 74135. Phone: (918) 619-4400.
What is SHELLY MERCER, M.D.'s NPI number?
SHELLY MERCER, M.D.'s National Provider Identifier (NPI) is 1770840126, issued on 04/23/2012.
How many Pediatric Endocrinology Physician providers are there in the US?
There are 1,457 Pediatric Endocrinology Physician providers across 51 states in the US. The average Pediatric Endocrinology Physician provider writes 151 Medicare Part D claims per year.
Does SHELLY MERCER, M.D. accept Medicare?
SHELLY MERCER, M.D. appears in CMS Medicare data with 20 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SHELLY MERCER, M.D.'s credentials?
SHELLY MERCER, M.D.'s NPI is 1770840126 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