Grace Pien, MD
NPI 1427077650 · Sleep Medicine (Internal Medicine) Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Sleep Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Pien, MD is a Sleep Medicine (Internal Medicine) Physician provider in Philadelphia, PA (NPI 1427077650).
Provider details
- NPI number
- 1427077650
- Entity type
- Individual
- Primary specialty
- Sleep Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD069768L (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
84 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) |
|---|---|---|
| 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 | 32 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 29 | $98 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 12 | $135 |
| Sleep Study in Sleep Lab (6 Years Or Older)95810 | 11 | $118 |
Typical Medicare-allowed amounts for these services range $17–$135 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-19
- Last updated
- 2023-09-17
- Certified
- 2023-09-17
Frequently asked questions
- What is Grace Pien's NPI number?
- Grace Pien's National Provider Identifier (NPI) is 1427077650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Pien's specialty?
- Grace Pien is listed in the NPPES registry with a primary specialty of Sleep Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Grace Pien located?
- Grace Pien's practice location on file with NPPES is 3624 Market St Fl 2, Philadelphia, PA 19104-5803.
- What is Grace Pien's phone number?
- The practice phone number listed in the NPPES registry for Grace Pien is (215) 662-7772.
- Does Grace Pien accept Medicare?
- Grace Pien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Pien's NPI active?
- Yes — Grace Pien's NPI (1427077650) is active in the NPPES registry as of the last update on 2023-09-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.