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- 104 Millsaps Dr, Hattiesburg, MS 39402
About Dr. Harris
Portia M. Harris, MD is a healthcare provider in Hattiesburg, MS specializing in rheumatology. Portia trained at Tulane University School of Medicine, graduating in 2003. According to Medicare claims data, Portia cared for 1,944 Medicare patients across 58,650 services. The services billed most often include injection, tocilizumab, 1 mg, injection, denosumab, 1 mg, and injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered). This provider record is associated with NPI 1669662292.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (601) 288-7500
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
104 MILLSAPS DR
Hattiesburg, MS 39402
Conditions Commonly Evaluated or Treated
Within Rheumatology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Wellness and energy
Most searched conditions
Autoimmune
- Antiphospholipid Syndrome
- Behçet's Disease
- Dermatomyositis
- Dry Eyes and Mouth
- Granulomatosis with Polyangiitis
- IgA Vasculitis
- IgG4-Related Disease
- Inflammatory myopathy
- Lupus Butterfly Rash
- Positive ANA Blood Test
- Relapsing Polychondritis
Bone
- Paget's Disease of Bone
Bone Health
Connective Tissue
- Hypermobility Syndrome
- Mixed Connective Tissue Disease
- Scleroderma skin disease
- Undifferentiated Connective Tissue Disease
Genetic & Connective Tissue
Inflammatory
- Adult-Onset Still's Disease
- Polymyalgia rheumatica
- Rib pain
- Sarcoidosis Joint Pain
Joints
- Baker's Cyst
- Chronic Joint Pain
- Enteropathic Arthritis
- Juvenile Idiopathic Arthritis
- Morning Joint Stiffness
- Palindromic Rheumatism
- Pseudogout
- Reactive Arthritis
- Swollen Fingers or Toes
- Swollen Joints
Nerve & Tendon
Skin & Soft Tissue
- Erythema Nodosum
Skin & Vascular
- Hypothermia And Frostbite At Work
- Mottled Purplish Skin
Soft Tissue
Spine & Back
Vascular
Procedures & services
Most searched procedures
- Arthritis management
- Infusion therapy
- Joint injections
Consultation
- Second Opinion for Autoimmune Disease
Consultations
Diagnostics & Injections
- Baker's Cyst Aspiration
- Bursa injection
- Carpal tunnel steroid injection
- Joint injection or aspiration
- Knee Joint Injection
- Nailfold Capillaroscopy
- Sacroiliac joint injection
- Salivary Gland Biopsy
- Tendon Sheath Injection
Education & Support
Imaging
Injections
- Ankle Joint Injection
- Finger Joint Injections
- Shoulder Cortisone Injection
- Ultrasound-guided hip injection
- Wrist Cortisone Injection
Lab & Diagnostics
- ANCA Blood Test
- Anti-CCP Antibody Test
- HLA-B27 Genetic Test
- Inflammation Blood Tests
- Joint Fluid Analysis
- Lupus Skin Biopsy
- Myositis Antibody Panel
- Rheumatoid Factor Blood Test
Lab Work
- Autoimmune Blood Panel
- Uric Acid Monitoring
Medication Management
- Biologic medication management
- DMARD Medication Management
- Gout Flare Treatment Plan
- Immunosuppressant Drug Monitoring
- Prolia Injection for Osteoporosis
- Reclast Infusion for Osteoporosis
- Steroid Taper Management
Pain Relief
Regenerative Medicine
- PRP Therapy for Joints
Procedures Most Often Billed to Medicare
58,650 services · 1,944 patients · 22 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
491 | More often than most peers in Rheumatology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
376 | More often than most peers in Rheumatology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
153 | As often as other peers in Rheumatology |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
135 | As often as other peers in Rheumatology |
| Administration of chemotherapy into vein, each additional hour | Treatment | 96415 |
128 | As often as other peers in Rheumatology |
| Injection of additional new drug or substance into vein | Treatment | 96375 |
88 | More often than most peers in Rheumatology |
| Injection, tocilizumab, 1 mg | Drug given | J3262 |
25,480 | Less often than most peers in Rheumatology |
| Injection, denosumab, 1 mg | Drug given | J0897 |
12,840 | More often than most peers in Rheumatology |
| Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) | Drug given | J0129 |
8,150 | As often as other peers in Rheumatology |
| Injection, rituximab, 10 mg | Drug given | J9312 |
4,100 | More often than most peers in Rheumatology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other rheumatologists at this location 5
Same specialty, same street address — most likely the same department or group.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 21 related providers in 3 groups
Trained at Tulane University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2003 at Tulane University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 5
Providers in MS who bill this service to Medicare most often.
Common questions
What does Dr. Harris specialize in?
Dr. Harris is a rheumatologist in Hattiesburg, MS. That is the designation recorded for this NPI in the federal registry, where it is listed as “Rheumatology”.
NPI registry
Where is Dr. Harris located?
Dr. Harris is listed at 104 Millsaps Dr, Hattiesburg, MS 39402. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Harris's phone number?
The number on file is (601) 288-7500. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Harris's NPI number?
Dr. Harris's National Provider Identifier is 1669662292. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Harris go to medical school?
Dr. Harris attended Tulane University School of Medicine, graduating in 2003. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Harris been practicing?
Dr. Harris has 23 years experience. Calculated from a graduation year of 2003, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Harris do most often?
According to Medicare billing data, Dr. Harris performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as injection of drug or substance under skin or into muscle and administration of chemotherapy into vein, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Harris confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Harris. If this is you, claiming it is free.
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