Gian Gierbolini, M.D.
NPI 1518935964 · Neurology Physician · Manati, PR
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gian Gierbolini, M.D. is a Neurology Physician provider in Manati, PR (NPI 1518935964).
Provider details
- NPI number
- 1518935964
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 16343 (PR)
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
20 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
57 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 43 | $88 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 14 | $163 |
Typical Medicare-allowed amounts for these services range $88–$163 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Donepezil Hcl | 471 | 99 |
| Memantine Hcl | 353 | 70 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 258 | 48 |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 193 | 29 |
| Levetiracetam | 171 | 21 |
| Pramipexole Di-Hclbrand: Pramipexole Dihydrochloride | 148 | 24 |
| Gabapentin | 111 | 23 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-10
- Last updated
- 2015-12-21
Frequently asked questions
- What is Gian Gierbolini's NPI number?
- Gian Gierbolini's National Provider Identifier (NPI) is 1518935964, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gian Gierbolini's specialty?
- Gian Gierbolini is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Gian Gierbolini located?
- Gian Gierbolini's practice location on file with NPPES is Manati Medical Center, Manati, PR 00674.
- What is Gian Gierbolini's phone number?
- The practice phone number listed in the NPPES registry for Gian Gierbolini is (787) 621-3737.
- Does Gian Gierbolini accept Medicare?
- Gian Gierbolini is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gian Gierbolini's NPI active?
- Yes — Gian Gierbolini's NPI (1518935964) is active in the NPPES registry as of the last update on 2015-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.