Mark Spier, D.P.M.
NPI 1851333553 · Foot & Ankle Surgery Podiatrist · Reisterstown, MD
Enrolled with Medicare as Practitioner - Podiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Spier, D.P.M. is a Foot & Ankle Surgery Podiatrist provider in Reisterstown, MD (NPI 1851333553).
Provider details
- NPI number
- 1851333553
- Entity type
- Individual
- Primary specialty
- Foot & Ankle Surgery PodiatristPodiatric Medicine & Surgery Service Providers
- Credential
- D.P.M.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 00676 (MD)
Specialties & taxonomies
Podiatric Medicine & Surgery Service Providers
Podiatric Medicine & Surgery Service Providers
Podiatric Medicine & Surgery Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
203 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 62 | $59 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 53 | $95 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 37 | $116 |
| New Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 15 Minutes Or More99202 | 26 | $76 |
| Removal of Fingernails Or Toenails, 6 Or More Nails11721 | 25 | $47 |
Typical Medicare-allowed amounts for these services range $47–$116 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Allopurinol | 93 | 28 |
| Colchicine | 31 | 19 |
| Febuxostat | 28 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$181,134 across 295 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-10
- Last updated
- 2008-02-20
Frequently asked questions
- What is Mark Spier's NPI number?
- Mark Spier's National Provider Identifier (NPI) is 1851333553, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Spier's specialty?
- Mark Spier is listed in the NPPES registry with a primary specialty of Foot & Ankle Surgery Podiatrist (Podiatric Medicine & Surgery Service Providers).
- Where is Mark Spier located?
- Mark Spier's practice location on file with NPPES is 11710 Reisterstown Rd, Reisterstown, MD 21136-3363.
- What is Mark Spier's phone number?
- The practice phone number listed in the NPPES registry for Mark Spier is (410) 833-0040.
- Does Mark Spier accept Medicare?
- Mark Spier is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Spier's NPI active?
- Yes — Mark Spier's NPI (1851333553) is active in the NPPES registry as of the last update on 2008-02-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.