NPI registry status
Active
2026 NPPES data Otolaryngology Physician NPI 1487804555 MD, PHD
Verify on CMS → Harold Davidson, MD, PHD
Otolaryngology Physician in Chambersburg, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 11,060 in Otolaryngology 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
592
Medicare Part D claims · 218 beneficiaries · Otolaryngology Physician avg: 536
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Harold Davidson, MD, PHD filed 592 Medicare Part D claims in 2024 as an Otolaryngology Physician in Chambersburg, Pennsylvania, prescribing 96% generic.
- 592
- Part D claims, 2024
- 96%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥65th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Harold Davidson, MD, PHD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1487804555), first enumerated 09/25/2008.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 592 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Pennsylvania statewide board action statistics are published annually — these figures describe aggregate state activity, not Harold Davidson, MD, PHD's individual license status. Verify directly with the state medical board.
Source: PA-BOM annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1487804555 · Otolaryngology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1487804555
- ENUM-MID 2008
- TAX-MID 11K Otolaryngology Physician
- RX-LIGHT 592
- BOOK-LIGHT 510 in Pennsylvania
- PHOTO-ENUM Joshua Sckolnick, M.D. · 2008
Harold Davidson, MD, PHD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
592 ≥ 65th percentile 65% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Harold Davidson, MD, PHD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Harold Davidson, MD, PHD?
Quality data not reportedPrimary specialty
Otolaryngology Physician
Medicare Part D claims
592 10% vs specialty avg
Specialty distribution in Pennsylvania
How Otolaryngology Physician compares to other specialties among Pennsylvania 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 Otolaryngology Physician. 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).
Practice Address
Provider Details
| NPI | 1487804555 |
|---|---|
| Specialty | Otolaryngology Physician |
| Credentials | MD, PHD |
| Gender | Male |
| NPI Issued | 09/25/2008 |
Hospital and facility affiliations
Facilities where Harold Davidson, MD, PHD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Wellspan Medical Group
Chambersburg, PA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Harold Davidson, MD, PHD. To verify Harold Davidson, MD, PHD's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Harold Davidson, MD, PHD - brand share 4.0%
Otolaryngology Physician average
4% brand-name claims vs 96% generic, on 592 2024 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 2024.
592
Total Claims
$31K
Total Drug Cost
218
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 860.6
- Total Day Supply
- 21,906
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $19K
- Generic Drug Cost
- $12K
- Opioid Claims
- 19 (3.2% rate)
- Antibiotic Claims
- 48
Patient Demographics
- Average Patient Age
- 74.6 years
- Avg HCC Risk Score
- 1.17
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 19, 65-74: 78, 75-84: 95, 85+: 26
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Harold Davidson, MD, PHD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Famotidine
Famotidine
127 claims
- Omeprazole
Omeprazole
72 claims
- Fluticasone Propio…
Fluticasone Propionate
63 claims
- Prednisone 35
Prednisone
35 claims
- Montelukast Sodium 32
Montelukast Sodium
32 claims
- Mupirocin 32
Mupirocin
32 claims
- Ofloxacin 23
Ofloxacin
23 claims
- Oxycodone-Acetamin… 18
Oxycodone-Acetaminophen
18 claims
| Drug | Claims |
|---|---|
| Famotidine | 127 |
| Omeprazole | 72 |
| Fluticasone Propionate | 63 |
| Prednisone | 35 |
| Montelukast Sodium | 32 |
| Mupirocin | 32 |
| Ofloxacin | 23 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 18 |
| Ipratropium Bromide | 15 |
| Azelastine Hcl | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Otolaryngology Physician Overview
How Harold Davidson, MD, PHD fits within the Otolaryngology Physician landscape nationally.
11,060
Otolaryngology Physician Providers in US
54
States with Otolaryngology Physician
536
Avg Claims per Provider
Harold Davidson, MD, PHD's 592 claims are above the specialty average of 536.
Nationwide Otolaryngology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Davidson, both outside Pennsylvania so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Otolaryngology Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Davidson.
One of 510 Otolaryngology Physician providers enrolled in Pennsylvania, 5 are shown here.
Dr. Soo Abboud
MD
Philadelphia, PA
Allyson Abell
Sayre, PA
Ahmad Abualsoud
MBBCH
Bethlehem, PA
Dr. Nithin Adappa
MD
Philadelphia, PA
Dr. Robert Adelson
MD
Philadelphia, PA
Compare Otolaryngology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Harold Davidson, MD, PHD's specialty? ▼
Harold Davidson, MD, PHD specializes in Otolaryngology Physician and practices in Chambersburg, Pennsylvania. Credentials: MD, PHD.
How much does Harold Davidson, MD, PHD prescribe under Medicare Part D? ▼
In 2024, Harold Davidson, MD, PHD wrote 592 Medicare Part D claims totaling $31K in drug costs for 218 beneficiaries.
Where is Harold Davidson, MD, PHD located? ▼
Harold Davidson, MD, PHD is located at 22 ST PAUL DR STE 202, Chambersburg, PA, 17201. Phone: (717) 217-6870.
What is Harold Davidson, MD, PHD's NPI number? ▼
Harold Davidson, MD, PHD's National Provider Identifier (NPI) is 1487804555, issued on 09/25/2008.
Does Harold Davidson, MD, PHD prescribe more brand-name or generic drugs? ▼
Harold Davidson, MD, PHD's prescribing is 4% brand-name and 96% generic drugs by claim count, with $19K in brand drug costs.
Does Harold Davidson, MD, PHD prescribe opioids? ▼
Yes, Harold Davidson, MD, PHD had 19 opioid claims in 2024 with an opioid prescribing rate of 3.2%.
How many Otolaryngology Physician providers are there in the US? ▼
There are 11,060 Otolaryngology Physician providers across 54 states in the US. The average Otolaryngology Physician provider writes 536 Medicare Part D claims per year.
What drugs does Harold Davidson, MD, PHD prescribe most often? ▼
Based on 2024 Medicare Part D data, Harold Davidson, MD, PHD's most frequently prescribed drugs include Famotidine, Omeprazole, Fluticasone Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Harold Davidson, MD, PHD accept Medicare? ▼
Harold Davidson, MD, PHD appears in CMS Medicare data with 592 Part D claims and 218 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Harold Davidson, MD, PHD's credentials? ▼
Harold Davidson, MD, PHD's NPI is 1487804555 with credentials MD, PHD. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.