Mark Parkhurst, M.D.
NPI 1629154539 · Internal Medicine Physician · Silver Spring, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Parkhurst, M.D. is a Internal Medicine Physician provider in Silver Spring, MD (NPI 1629154539).
Provider details
- NPI number
- 1629154539
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- D0024093 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
5,117 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Admn Sarscov2 Vacc 1 Dose90480 | 1,038 | $39 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 1,014 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 713 | $95 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 419 | $82 |
| Administration of Influenza Virus VaccineG0008 | 372 | $32 |
| Annual Alcohol Misuse Screening, 5 to 15 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 112 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 327 | 87 |
| Amlodipine Besylate | 270 | 68 |
| Levothyroxine Sodium | 261 | 69 |
| Losartan Potassium | 140 | 42 |
| Tamsulosin Hcl | 137 | 37 |
| Escitalopram Oxalate | 136 | 35 |
| Apixaban |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-31
- Last updated
- 2026-02-26
- Certified
- 2026-02-26
Frequently asked questions
- What is Mark Parkhurst's NPI number?
- Mark Parkhurst's National Provider Identifier (NPI) is 1629154539, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Parkhurst's specialty?
- Mark Parkhurst is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Parkhurst located?
- Mark Parkhurst's practice location on file with NPPES is 3110 Gracefield Rd, Silver Spring, MD 20904-1820.
- What is Mark Parkhurst's phone number?
- The practice phone number listed in the NPPES registry for Mark Parkhurst is (301) 572-8340.
- Does Mark Parkhurst accept Medicare?
- Mark Parkhurst is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Parkhurst's NPI active?
- Yes — Mark Parkhurst's NPI (1629154539) is active in the NPPES registry as of the last update on 2026-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.