2026 NPPES data Psychiatry Physician NPI 1033749411 DMSC, MPH, PA-C
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ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C

Psychiatry Physician in HICKORY, 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
638
Medicare Part D claims · 99 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$3.6K
176 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C filed 638 Medicare Part D claims in 2023 as a Psychiatry Physician in HICKORY, North Carolina, prescribing 80% generic.

638
Part D claims, 2023
80%
generic prescribing
$3.6K
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.

ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C's Medicare Part D volume vs every U.S. prescriber

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

638 Top 31% higher than 69% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). This entry sits in this band. 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)

ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C 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 ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C?

Quality data not reported

NPI registry status

Active

Issued 01/24/2020

NPI 1033749411

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

638 39% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in North Carolina

How Psychiatry Physician compares to other specialties among North Carolina providers

North Carolina providers

Psychiatry Physician share within North Carolina

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

Specialty board-certification context

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

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

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

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

ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C appears in the CMS NPPES registry as a Psychiatry Physician provider holding DMSC, MPH, PA-C credentials at 24 2ND AVE NE STE 201, HICKORY, NC, 28601, with a listed phone of (828) 324-9900. NPI 1033749411 was issued on 01/24/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what INFANZON SANTIAGO 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 638 prescription claims written by this provider, covering 99 Medicare beneficiaries and totaling roughly $254K in drug spend, split 20% brand-name and 80% 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.

Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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

24 2ND AVE NE STE 201
HICKORY, NC 28601

Provider Details

NPI 1033749411
Specialty Psychiatry Physician
Credentials DMSC, MPH, PA-C
Gender Female
NPI Issued 01/24/2020

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 ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$3.6K

Largest payer

ITI, Inc. (d/b/a Intra-Cellular Therapies, 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 · Typical

ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C — brand share 20.0%
Specialty average (est.)

20% brand-name claims vs 80% generic, on 638 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.

638
Total Claims
$254K
Total Drug Cost
99
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
971
Total Day Supply
28,544
Brand vs Generic
20% brand / 80% generic
Brand Drug Cost
$239K
Generic Drug Cost
$15K

Patient Demographics

Average Patient Age
60.2 years
Avg HCC Risk Score
1.31
Gender Split
67% female / 33% male
Age Distribution
<65: 52, 65-74: 32, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C 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
Clonazepam
67
Bupropion Xl
Bupropion Hcl
41
Lamotrigine
36
Gabapentin
30
Quetiapine Fumarate
29
Zolpidem Tartrate
28
Lorazepam
27
Lybalvi
Olanzapine/Samidorphan Malate
18
Sertraline Hcl
17
Trazodone Hcl
17

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

Psychiatry Physician Overview

How ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C fits within the Psychiatry Physician landscape nationally.

53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider

ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C's 638 claims are below the specialty average of 1,038.

Nearby Psychiatry Physician Providers in North Carolina

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

Compare Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C's specialty?
ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C specializes in Psychiatry Physician and practices in HICKORY, North Carolina. Credentials: DMSC, MPH, PA-C.
How much does ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C prescribe under Medicare Part D?
In 2023, ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C wrote 638 Medicare Part D claims totaling $254K in drug costs for 99 beneficiaries.
Where is ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C located?
ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C is located at 24 2ND AVE NE STE 201, HICKORY, NC, 28601. Phone: (828) 324-9900.
What is ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C's NPI number?
ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C's National Provider Identifier (NPI) is 1033749411, issued on 01/24/2020.
Does ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C prescribe more brand-name or generic drugs?
ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C's prescribing is 20% brand-name and 80% generic drugs by claim count, with $239K in brand drug costs.
How many Psychiatry Physician providers are there in the US?
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C prescribe most often?
Based on 2023 Medicare Part D data, ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C's most frequently prescribed drugs include Clonazepam, Bupropion Xl, Lamotrigine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C accept Medicare?
ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C appears in CMS Medicare data with 638 Part D claims and 99 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C's credentials?
ALEXANDRA INFANZON SANTIAGO, DMSC, MPH, PA-C's NPI is 1033749411 with credentials DMSC, MPH, PA-C. 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