2026 NPPES data Child & Adolescent Psychiatry Physician NPI 1649618786 MD
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MARY THERESA LADD, MD

Child & Adolescent Psychiatry Physician in CHARLESTON, South 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
249
Medicare Part D claims · 24 beneficiaries · Child & Adolescent Psychiatry Physician avg: 600
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$12.7K
68 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MARY THERESA LADD, MD filed 249 Medicare Part D claims in 2023 as a Child & Adolescent Psychiatry Physician in CHARLESTON, South Carolina, prescribing 95% generic.

249
Part D claims, 2023
95%
generic prescribing
$12.7K
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.

MARY THERESA LADD, MD's Medicare Part D volume vs every U.S. prescriber

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

249 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 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)

MARY THERESA LADD, 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 MARY THERESA LADD, MD?

Quality data not reported

NPI registry status

Active

Issued 06/11/2013

NPI 1649618786

Primary specialty

Child & Adolescent Psychiatry Physician

Mid-sized

6,160 US NPIs in this specialty

Medicare Part D claims

249 58% vs specialty avg

2023 prescription claims

Specialty avg: 600

Specialty distribution in South Carolina

How Child & Adolescent Psychiatry Physician compares to other specialties among South Carolina providers

South Carolina providers

Child & Adolescent Psychiatry Physician share within South Carolina

1. Child & Adolescent Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Child & Adolescent Psychiatry Physician share within South Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Child & Adolescent Psychiatry Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Child & Adolescent Psychiatry Physician ABMS/AOA estimate

Est. board-certified rate (Child & Adolescent Psychiatry Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Child & Adolescent Psychiatry 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).

MARY THERESA LADD, MD appears in the CMS NPPES registry as a Child & Adolescent Psychiatry Physician provider holding MD credentials at 169 ASHLEY AVE, CHARLESTON, SC, 29425, with a listed phone of (843) 792-2123. NPI 1649618786 was issued on 06/11/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LADD 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 249 prescription claims written by this provider, covering 24 Medicare beneficiaries and totaling roughly $14K in drug spend, split 5% brand-name and 95% 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.

Child & Adolescent Psychiatry Physician is a mid-sized specialty nationwide, with 6,160 enrolled providers across 54 states and an average of 600 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

169 ASHLEY AVE
CHARLESTON, SC 29425

Provider Details

NPI 1649618786
Specialty Child & Adolescent Psychiatry Physician
Credentials MD
Gender Female
NPI Issued 06/11/2013

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 MARY THERESA LADD, MD. Source: openpaymentsdata.cms.gov.

Total received

$12.7K

Largest payer

IRONSHORE 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.

Brand vs generic prescribing mix · Generic-heavy

MARY THERESA LADD, MD — brand share 5.0%
Specialty average (est.)

5% brand-name claims vs 95% generic, on 249 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.

249
Total Claims
$14K
Total Drug Cost
24
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
407
Total Day Supply
11,969
Brand vs Generic
5% brand / 95% generic
Brand Drug Cost
$10K
Generic Drug Cost
$5K

Patient Demographics

Average Patient Age
58.8 years
Avg HCC Risk Score
0.92

Top Prescribed Drugs (Medicare Part D)

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

What MARY THERESA LADD, 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
Alprazolam
34
Clonazepam
30
Dextroamphetamine-Amphetamine
Dextroamphetamine/Amphetamine
21
Zolpidem Tartrate
18
Sertraline Hcl
15
Lamotrigine
14
Butalbital-Acetaminophen-Caffe
Butalb/Acetaminophen/Caffeine
12

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

Child & Adolescent Psychiatry Physician Overview

How MARY THERESA LADD, MD fits within the Child & Adolescent Psychiatry Physician landscape nationally.

6,160
Child & Adolescent Psychiatry Physician Providers in US
54
States with Child & Adolescent Psychiatry Physician
600
Avg Claims per Provider

MARY THERESA LADD, MD's 249 claims are below the specialty average of 600.

Nearby Child & Adolescent Psychiatry Physician Providers in South Carolina

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

Compare Child & Adolescent Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARY THERESA LADD, MD's specialty?
MARY THERESA LADD, MD specializes in Child & Adolescent Psychiatry Physician and practices in CHARLESTON, South Carolina. Credentials: MD.
How much does MARY THERESA LADD, MD prescribe under Medicare Part D?
In 2023, MARY THERESA LADD, MD wrote 249 Medicare Part D claims totaling $14K in drug costs for 24 beneficiaries.
Where is MARY THERESA LADD, MD located?
MARY THERESA LADD, MD is located at 169 ASHLEY AVE, CHARLESTON, SC, 29425. Phone: (843) 792-2123.
What is MARY THERESA LADD, MD's NPI number?
MARY THERESA LADD, MD's National Provider Identifier (NPI) is 1649618786, issued on 06/11/2013.
Does MARY THERESA LADD, MD prescribe more brand-name or generic drugs?
MARY THERESA LADD, MD's prescribing is 5% brand-name and 95% generic drugs by claim count, with $10K in brand drug costs.
How many Child & Adolescent Psychiatry Physician providers are there in the US?
There are 6,160 Child & Adolescent Psychiatry Physician providers across 54 states in the US. The average Child & Adolescent Psychiatry Physician provider writes 600 Medicare Part D claims per year.
What drugs does MARY THERESA LADD, MD prescribe most often?
Based on 2023 Medicare Part D data, MARY THERESA LADD, MD's most frequently prescribed drugs include Alprazolam, Clonazepam, Dextroamphetamine-Amphetamine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARY THERESA LADD, MD accept Medicare?
MARY THERESA LADD, MD appears in CMS Medicare data with 249 Part D claims and 24 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARY THERESA LADD, MD's credentials?
MARY THERESA LADD, MD's NPI is 1649618786 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