Martha Chalmers, M.D.
NPI 1508866179 · Family Medicine Physician · Halethorpe, MD
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Martha Chalmers, M.D. is a Family Medicine Physician provider in Halethorpe, MD (NPI 1508866179).
Provider details
- NPI number
- 1508866179
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- D00059591 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 35 | 34 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 24 | 23 |
| Doxycycline Monohydrate | 23 | 23 |
| Oxycodone Hcl | 18 | 18 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 17 |
| Triamcinolone Acetonide | 12 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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 , 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-26
- Last updated
- 2021-06-25
- Certified
- 2021-06-25
Frequently asked questions
- What is Martha Chalmers's NPI number?
- Martha Chalmers's National Provider Identifier (NPI) is 1508866179, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Martha Chalmers's specialty?
- Martha Chalmers is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Martha Chalmers located?
- Martha Chalmers's practice location on file with NPPES is 1701 Twin Springs Rd, Halethorpe, MD 21227-3553.
- What is Martha Chalmers's phone number?
- The practice phone number listed in the NPPES registry for Martha Chalmers is (410) 737-5000.
- Does Martha Chalmers accept Medicare?
- Martha Chalmers is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Martha Chalmers's NPI active?
- Yes — Martha Chalmers's NPI (1508866179) is active in the NPPES registry as of the last update on 2021-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.