NPI registry status
Active
2026 NPPES data Oral and Maxillofacial Surgery (Dentist) NPI 1942287586 DDS
Verify on CMS → Ann Holzhauer, DDS
Oral and Maxillofacial Surgery (Dentist) in Greenwood, South Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 7,631 in Oral and Maxillofacial Surgery (Dentist), 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
449
Medicare Part D claims · 188 beneficiaries · Oral and Maxillofacial Surgery (Dentist) avg: 378
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Ann Holzhauer, DDS filed 449 Medicare Part D claims in 2023 as a Oral and Maxillofacial Surgery (Dentist) in Greenwood, South Carolina.
- 449
- Part D claims, 2023
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.
Ann Holzhauer, DDS's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
449 Top 38% higher than 62% of 1,370,886 prescribers
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
What does the federal data show about Ann Holzhauer, DDS?
Quality data not reportedPrimary specialty
Oral and Maxillofacial Surgery (Dentist)
Medicare Part D claims
449 19% vs specialty avg
Specialty distribution in South Carolina
How Oral and Maxillofacial Surgery (Dentist) compares to other specialties among South Carolina 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 Oral and Maxillofacial Surgery (Dentist). Verify directly:
How MIPS and board certification work
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).
Ann Holzhauer, DDS appears in the CMS NPPES registry as a Oral and Maxillofacial Surgery (Dentist) provider holding DDS credentials at 112 LINER DR, Greenwood, SC, 29646, with a listed phone of (864) 229-5733. NPI 1942287586 was issued on 12/25/2005.
Medicare Part D records for calendar year 2023 show 449 prescription claims written by this provider, covering 188 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 39.0%.
Oral and Maxillofacial Surgery (Dentist) is a mid-sized specialty nationwide, with 7,631 enrolled providers across 52 states and an average of 378 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
Provider Details
| NPI | 1942287586 |
|---|---|
| Specialty | Oral and Maxillofacial Surgery (Dentist) |
| Credentials | DDS |
| Gender | Female |
| NPI Issued | 12/25/2005 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
449
Total Claims
$2K
Total Drug Cost
188
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 455
- Total Day Supply
- 2,759
- Generic Drug Cost
- $2K
- Opioid Claims
- 175 (39.0% rate)
- Antibiotic Claims
- 184
Patient Demographics
- Average Patient Age
- 72.6 years
- Avg HCC Risk Score
- 1.11
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 20, 65-74: 91, 75-84: 62, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ann Holzhauer, DDS prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amoxicillin
Amoxicillin
146 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
139 claims
- Dexamethasone 31
Dexamethasone
31 claims
- Clindamycin Hcl 25
Clindamycin Hcl
25 claims
- Ibuprofen 20
Ibuprofen
20 claims
- Hydromorphone Hcl 19
Hydromorphone Hcl
19 claims
- Chlorhexidine Gluc… 16
Chlorhexidine Gluconate
16 claims
- Oxycodone-Acetamin… 12
Oxycodone-Acetaminophen
12 claims
| Drug | Claims |
|---|---|
| Amoxicillin | 146 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 139 |
| Dexamethasone | 31 |
| Clindamycin Hcl | 25 |
| Ibuprofen | 20 |
| Hydromorphone Hcl | 19 |
| Chlorhexidine Gluconate | 16 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 12 |
| Azithromycin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Oral and Maxillofacial Surgery (Dentist) in SC →
All providers in South Carolina →
Compare specialties →
Oral and Maxillofacial Surgery (Dentist) Overview
How Ann Holzhauer, DDS fits within the Oral and Maxillofacial Surgery (Dentist) landscape nationally.
7,631
Oral and Maxillofacial Surgery (Dentist) Providers in US
52
States with Oral and Maxillofacial Surgery (Dentist)
378
Avg Claims per Provider
Ann Holzhauer, DDS's 449 claims are above the specialty average of 378.
Nearby Oral and Maxillofacial Surgery (Dentist) Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Holzhauer.
Dr. Ricardo Abakah
D.D.S.
Goose Creek, SC
Dr. Matthew Barefoot
D.D.S., M.D.
Mt Pleasant, SC
Dr. Jonathan Bean
D.M.D.
Columbia, SC
Dr. David Beltran
DDS
Fort Jackson, SC
Dr. Mark Billman
DMD MD
Rock Hill, SC
Compare Oral and Maxillofacial Surgery (Dentist) 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 South Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Oral and Maxillofacial Surgery (Dentist) 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.
Healthcare Guides
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Frequently Asked Questions
What is Ann Holzhauer, DDS's specialty? ▼
Ann Holzhauer, DDS specializes in Oral and Maxillofacial Surgery (Dentist) and practices in Greenwood, South Carolina. Credentials: DDS.
How much does Ann Holzhauer, DDS prescribe under Medicare Part D? ▼
In 2023, Ann Holzhauer, DDS wrote 449 Medicare Part D claims totaling $2K in drug costs for 188 beneficiaries.
Where is Ann Holzhauer, DDS located? ▼
Ann Holzhauer, DDS is located at 112 LINER DR, Greenwood, SC, 29646. Phone: (864) 229-5733.
What is Ann Holzhauer, DDS's NPI number? ▼
Ann Holzhauer, DDS's National Provider Identifier (NPI) is 1942287586, issued on 12/25/2005.
Does Ann Holzhauer, DDS prescribe opioids? ▼
Yes, Ann Holzhauer, DDS had 175 opioid claims in 2023 with an opioid prescribing rate of 39.0%.
How many Oral and Maxillofacial Surgery (Dentist) providers are there in the US? ▼
There are 7,631 Oral and Maxillofacial Surgery (Dentist) providers across 52 states in the US. The average Oral and Maxillofacial Surgery (Dentist) provider writes 378 Medicare Part D claims per year.
What drugs does Ann Holzhauer, DDS prescribe most often? ▼
Based on 2023 Medicare Part D data, Ann Holzhauer, DDS's most frequently prescribed drugs include Amoxicillin, Hydrocodone-Acetaminophen, Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ann Holzhauer, DDS accept Medicare? ▼
Ann Holzhauer, DDS appears in CMS Medicare data with 449 Part D claims and 188 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ann Holzhauer, DDS's credentials? ▼
Ann Holzhauer, DDS's NPI is 1942287586 with credentials DDS. 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
View source datasets and methodology notes
- 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.