Margaret Sigman
NPI 1447461108 · Allergy & Immunology Physician · Midlothian, VA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Sigman is a Allergy & Immunology Physician provider in Midlothian, VA (NPI 1447461108).
Provider details
- NPI number
- 1447461108
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 200801988 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
6,478 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) |
|---|---|---|
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 3,496 | $14 |
| Test for Allergy Using Allergenic Extract95004 | 2,208 | $3 |
| Test for Allergy Using Allergenic Extract Injected Into Skin95024 | 435 | $7 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 141 | $124 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 122 | $87 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 28 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Montelukast Sodium | 205 | 58 |
| Azelastine Hcl | 146 | 58 |
| Fluticasone Propionate | 97 | 32 |
| Levocetirizine Dihydrochloride | 91 | 30 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 72 | 15 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 65 | 34 |
| Epinephrine | 32 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,394 across 119 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
- 2007-05-24
- Last updated
- 2017-03-10
Frequently asked questions
- What is Margaret Sigman's NPI number?
- Margaret Sigman's National Provider Identifier (NPI) is 1447461108, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Sigman's specialty?
- Margaret Sigman is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Sigman located?
- Margaret Sigman's practice location on file with NPPES is 5924 Harbour Park Dr, Midlothian, VA 23112-2163.
- What is Margaret Sigman's phone number?
- The practice phone number listed in the NPPES registry for Margaret Sigman is (804) 739-9005.
- Does Margaret Sigman accept Medicare?
- Margaret Sigman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Sigman's NPI active?
- Yes — Margaret Sigman's NPI (1447461108) is active in the NPPES registry as of the last update on 2017-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.