2026 NPPES data General Practice Physician NPI 1568435634 M.D.
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Susan Clanzy, M.D.

General Practice Physician in Baltimore, Maryland. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,677 in General Practice Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 40 beneficiaries · General Practice Physician avg: 3K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Susan Clanzy, M.D. filed 1,648 Medicare Part D claims in 2023 as a General Practice Physician in Baltimore, Maryland, prescribing 84% generic.

2K
Part D claims, 2023
84%
generic prescribing

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.

Susan Clanzy, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,648 Top 18% higher than 82% 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%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). This entry sits in this band. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 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)

Susan Clanzy, 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).

What does the federal data show about Susan Clanzy, M.D.?

Quality data not reported

NPI registry status

Active

Issued 02/09/2006

NPI 1568435634

Primary specialty

General Practice Physician

Mid-sized

16,677 US NPIs in this specialty

Medicare Part D claims

1,648 43% vs specialty avg

2023 prescription claims

Specialty avg: 2,872

Specialty distribution in Maryland

How General Practice Physician compares to other specialties among Maryland providers

Maryland providers
Behavior Technician - 14.1%Behavior Technician14.1%Clinical Social Worker - 5.5%Clinical Social Worker5.5%Student in an Organized Health Care Education/Training Program - 4.5%Student in an Organized Health Care Education/Training Program4.5%Home Health Aide - 4.4%Home Health Aide4.4%Physical Therapist - 3.9%Physical Therapist3.9%Pharmacist - 3.6%Pharmacist3.6%General Practice Physician - 0.2%General Practice Physician0.2%
Largest specialties in Maryland (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for General Practice Physician. Verify directly:

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).

Susan Clanzy, M.D. appears in the CMS NPPES registry as a General Practice Physician provider holding M.D. credentials at 1804 W NORTH AVE, Baltimore, MD, 21217, with a listed phone of (410) 685-6331. NPI 1568435634 was issued on 02/09/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Clanzy 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 1,648 prescription claims written by this provider, covering 40 Medicare beneficiaries and totaling roughly $198K in drug spend, split 16% brand-name and 84% generic by claim count, with an opioid prescribing rate of 10.0%. 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.

General Practice Physician is a mid-sized specialty nationwide, with 16,677 enrolled providers across 56 states and an average of 2,872 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

1804 W NORTH AVE
Baltimore, MD 21217

Provider Details

NPI 1568435634
Specialty General Practice Physician
Credentials M.D.
Gender Female
NPI Issued 02/09/2006

Brand vs generic prescribing mix · Typical

Susan Clanzy, M.D. - brand share 16.0%
General Practice Physician average

16% brand-name claims vs 84% generic, on 1,648 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.

1,648
Total Claims
$198K
Total Drug Cost
40
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,789
Total Day Supply
51,131
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$169K
Generic Drug Cost
$29K
Opioid Claims
165 (10.0% rate)
Antibiotic Claims
27

Patient Demographics

Average Patient Age
61.5 years
Avg HCC Risk Score
2.01
Gender Split
65% female / 35% male
Age Distribution
<65: 26, 65-74: 13, 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 Susan Clanzy, M.D. 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
Clonidine Hcl
168
Promethazine Hcl
167
Suboxone
Buprenorphine Hcl/Naloxone Hcl
106
Oxycodone Hcl
97
Amlodipine Besylate
88
Hydrochlorothiazide
82
Clonazepam
73
Alprazolam
65
Lisinopril
57
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
54

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

General Practice Physician Overview

How Susan Clanzy, M.D. fits within the General Practice Physician landscape nationally.

16,677
General Practice Physician Providers in US
56
States with General Practice Physician
2,872
Avg Claims per Provider

Susan Clanzy, M.D.'s 1,648 claims are below the specialty average of 2,872.

Nearby General Practice Physician Providers in Maryland

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

Compare General Practice Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Maryland medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby General Practice Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Susan Clanzy, M.D.'s specialty?
Susan Clanzy, M.D. specializes in General Practice Physician and practices in Baltimore, Maryland. Credentials: M.D..
How much does Susan Clanzy, M.D. prescribe under Medicare Part D?
In 2023, Susan Clanzy, M.D. wrote 1,648 Medicare Part D claims totaling $198K in drug costs for 40 beneficiaries.
Where is Susan Clanzy, M.D. located?
Susan Clanzy, M.D. is located at 1804 W NORTH AVE, Baltimore, MD, 21217. Phone: (410) 685-6331.
What is Susan Clanzy, M.D.'s NPI number?
Susan Clanzy, M.D.'s National Provider Identifier (NPI) is 1568435634, issued on 02/09/2006.
Does Susan Clanzy, M.D. prescribe more brand-name or generic drugs?
Susan Clanzy, M.D.'s prescribing is 16% brand-name and 84% generic drugs by claim count, with $169K in brand drug costs.
Does Susan Clanzy, M.D. prescribe opioids?
Yes, Susan Clanzy, M.D. had 165 opioid claims in 2023 with an opioid prescribing rate of 10.0%.
How many General Practice Physician providers are there in the US?
There are 16,677 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,872 Medicare Part D claims per year.
What drugs does Susan Clanzy, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Susan Clanzy, M.D.'s most frequently prescribed drugs include Clonidine Hcl, Promethazine Hcl, Suboxone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Susan Clanzy, M.D. accept Medicare?
Susan Clanzy, M.D. appears in CMS Medicare data with 1,648 Part D claims and 40 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Susan Clanzy, M.D.'s credentials?
Susan Clanzy, M.D.'s NPI is 1568435634 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

Compiled from official public sources by the PlainDoctor editorial team.