2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1124039458 M.D.
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ROBERT CONSTANT, M.D.

Endocrinology, Diabetes & Metabolism Physician in ORLANDO, 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
634
Medicare Part D claims · 215 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
43%
generic claims · 57% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: ROBERT CONSTANT, M.D. is a Endocrinology, Diabetes & Metabolism Physician ([object Object]) practicing in ORLANDO, Florida with a Medicare Part D prescribing footprint of 634 claims across 215 beneficiaries — 57% brand-name prescribing .

What stands out: ROBERT CONSTANT, M.D. filed 634 Medicare Part D claims in 2023 across ORLANDO, Florida. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

ROBERT CONSTANT, M.D. 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).

ROBERT CONSTANT, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 08/11/2006

NPI 1124039458

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

634 76% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in Florida

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Florida providers

Florida providers

Endocrinology, Diabetes & Metabolism Physician share within Florida

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within Florida

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism 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).

ROBERT CONSTANT, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider practicing in ORLANDO, Florida, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1124039458. 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.

ROBERT CONSTANT, M.D. appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 3113 LAWTON RD, ORLANDO, FL, 32803, with a listed phone of (407) 894-3241. NPI 1124039458 was issued on 08/11/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CONSTANT 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 634 prescription claims written by this provider, covering 215 Medicare beneficiaries and totaling roughly $165K in drug spend, split 57% brand-name and 43% 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.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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

3113 LAWTON RD
ORLANDO, FL 32803

Provider Details

NPI 1124039458
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials M.D.
Gender Male
NPI Issued 08/11/2006

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 ROBERT CONSTANT, M.D.. To verify ROBERT CONSTANT, M.D.'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 · Brand-heavy

ROBERT CONSTANT, M.D. — brand share 57.0%
Specialty average (est.)

57% brand-name claims vs 43% generic, on 634 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.

634
Total Claims
$165K
Total Drug Cost
215
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,562
Total Day Supply
46,462
Brand vs Generic
57% brand / 43% generic
Brand Drug Cost
$154K
Generic Drug Cost
$7K

Patient Demographics

Average Patient Age
73.6 years
Avg HCC Risk Score
1.32
Gender Split
64% female / 36% male
Age Distribution
<65: 14, 65-74: 106, 75-84: 70, 85+: 25

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
158
Synthroid
Levothyroxine Sodium
123
Metformin Hcl
47
Liothyronine Sodium
26
Methimazole
19
Hydrocortisone
16
Novolog Flexpen
Insulin Aspart
12
Humalog
Insulin Lispro
11
Tresiba Flextouch U-100
Insulin Degludec
11
Lantus Solostar
"Insulin Glargine
N/A

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

Endocrinology, Diabetes & Metabolism Physician Overview

How ROBERT CONSTANT, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

ROBERT CONSTANT, M.D.'s 634 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Florida

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

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROBERT CONSTANT, M.D.'s specialty?
ROBERT CONSTANT, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in ORLANDO, Florida. Credentials: M.D..
How much does ROBERT CONSTANT, M.D. prescribe under Medicare Part D?
In 2023, ROBERT CONSTANT, M.D. wrote 634 Medicare Part D claims totaling $165K in drug costs for 215 beneficiaries.
Where is ROBERT CONSTANT, M.D. located?
ROBERT CONSTANT, M.D. is located at 3113 LAWTON RD, ORLANDO, FL, 32803. Phone: (407) 894-3241.
What is ROBERT CONSTANT, M.D.'s NPI number?
ROBERT CONSTANT, M.D.'s National Provider Identifier (NPI) is 1124039458, issued on 08/11/2006.
Does ROBERT CONSTANT, M.D. prescribe more brand-name or generic drugs?
ROBERT CONSTANT, M.D.'s prescribing is 57% brand-name and 43% generic drugs by claim count, with $154K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does ROBERT CONSTANT, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ROBERT CONSTANT, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Synthroid, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT CONSTANT, M.D. accept Medicare?
ROBERT CONSTANT, M.D. appears in CMS Medicare data with 634 Part D claims and 215 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT CONSTANT, M.D.'s credentials?
ROBERT CONSTANT, M.D.'s NPI is 1124039458 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